Liver treatment with zebrafish. What diseases await zebrafish? Breeding forms Danio rerio

In the aquariums of European zebrafish lovers, pink appeared in 1911. Since then, he has become their permanent resident. This is due to the unpretentiousness, peaceful and playful disposition of the fish and its good breeding ability. Danios are usually kept in a common aquarium. Even a novice can handle it.

Description

The pink zebrafish belongs to big family cyprinids. It has an elongated and, as it were, flattened body from the sides, two pairs of antennae located at the edges of the mouth, shiny scales on the back and sides, having complex combination colors: olive, blue, green, gray.

The belly is colored pink. In sexually mature males, it acquires a rich bright pink hue. Young fish from the sides have red wedge-shaped stripes that run from the tail to the middle of the body, transparent fins with a greenish tint and a small cherry or red anal fin.

An adult pink zebrafish grows up to five centimeters in length. Under natural conditions, you can find specimens up to eight centimeters.

In nature, this fish is widespread - from India to the countries of Indochina. There, large flocks of zebrafish live in the water of small streams and rivers.

Danio pink - how to distinguish a female from a male

Be able to identify gender aquarium fish ok is important, especially if you want to breed them and get offspring in the shortest possible time. Undoubtedly, you can experiment and gradually put several fish into a separate “house” and wait for the females to start spawning. In fact, there are signs by which an experienced aquarist determines the sex of the fish.

Female

It’s good if the beginner managed to notice how the fish spawns, and he was able to mark it in some way. Then this individual can simply be placed in the spawning ground. It is more difficult when this is only the first offspring, or the female must be selected from the “herd” upon purchase.

The easiest way in this case is to focus on the size that the zebrafish has pink. The female (adult) is larger than the male, it has a rounded belly, while the male is smaller in length and much thinner. According to this principle, you can only choose adult fish of the same age, since the first few months the male zebrafish can be larger than the representatives of this species.

Male

A method proven by many aquarists to find a male among fish is coloring. Pink zebrafish (male) has stripes on the body that are much brighter than the female. This is very important in mating season”, when the female before spawning chooses the largest and brightest partner for herself. It is always the leader in the pack. Some aquarists distinguish the sex of the fish by the shape of the anal fin - in females it is slightly rounder and larger. But this is an unreliable criterion for selection, in this case it is easy to make a mistake - in fish it has almost the same size. Try to watch the fish during the mating season. Males always develop very great speed, circling around their "ladies of the heart." Therefore, inside such a circle is a female, and a fish rushing around her is a male.

For many beginner aquarists, the first fish is the pink zebrafish. Its content is not too difficult, a beginner can easily handle it. You will need a rectangular aquarium with a volume of at least 50 liters and a height of about thirty centimeters. It should be covered with glass or a lid, as these fish are not only swimmers, but also excellent jumpers.

You can use fine granite chips, clean and coarse river sand, pebbles as a soil. Plant small-leaved plants along the back and side walls. At the front glass, the space remains open.

Water parameters

It should be noted that the pink zebrafish is not too picky about the composition of water (chemical). For this species, it is not too important how many salts are contained in the water. A hardness not exceeding 20°dH is suitable for it. pH - 6-7.5. Comfort temperature water +18 - +22°С.

The aquarium must be provided with filtration and artificial aeration of water. Once a week, you should change a fifth of the water to settled fresh.

Lighting

Danio pink loves bright lighting. For this purpose, it is more expedient to use LB fluorescent lamps. They are best placed along the front glass. Danio pink will only benefit if oblique incident rays illuminate it. It is desirable that natural sunlight enters the aquarium for two hours a day.

Compatibility

Danio pink, as well as other members of its genus, is a peace-loving fish. She gets along well with other species that need the same conditions of detention, and at the same time is not very cocky.

Feeding

I must say that this small fish has an excellent appetite. She eats all types of dry and live food of the appropriate size. You can feed danios with coretra, bloodworms, daphnia, young brine shrimp. They also pick up small insects from the surface of the water.

Danio pink - breeding

Two males go to spawn for one female. Sometimes several individuals are deposited in the same ratio. The fact is that female zebrafish, like other species of the genus, often have cysts. Because of this, the female may be infertile. And one more subtlety - decanting eggs from small fish is quite problematic, so females up to a year old are selected for spawning. Choosing males is much easier.

Two weeks before the start of spawning, females must be separated from males and kept separately. During this period, they are intensively fed with live food. During this time, the female's abdomen will noticeably round, which indicates readiness for spawning.

We prepare the spawning ground

It should be at least ten liters per female. We lay a separator mesh at the bottom. It covers the entire bottom and is located at a height of about two centimeters from it. Instead of a net, many aquarists use small-leaved plants that are pressed to the bottom with pebbles. It is important to properly prepare the water. It must be fresh and settled. One third of it should be boiled water. This will allow you to get optimal hardness - no more than 10°dH. pH = 7.

The water temperature when transplanting fish into the spawning ground should be the same as in the aquarium where they were previously kept. Water should cover the separator mesh no more than 5 - 8 centimeters.

In the evening, males are sent to the spawning ground, and after a few hours, females. Set the temperature on the thermostat to 26-28°C. And then the lights are turned off in the spawning ground. The next morning, at dawn or when artificial lighting is turned on, spawning begins.

It continues for several hours. During this time, the female spawns more than two hundred eggs, painted in a soft milky color. After that, the parents should be removed from the spawning grounds. In addition, you can remove the separator mesh by carefully but carefully brushing off the eggs from it.

Incubation continues for two days. After about four days, the fry will already be able to swim, and they will be able to get their first "lunch" - ciliates, Artemia nauplii, live dust. Over time, they are transferred to larger foods and moved to a larger aquarium. At six to eight months, the danio pink reaches puberty. Reproduction of these fish is not difficult, but it will require accuracy from a beginner.

Diseases

Danio is loved by almost all beginner aquarists. This is an unpretentious, beautiful fish that does not create problems in the growing process. But, unfortunately, like other inhabitants of the aquarium, she can get sick, and her owner must be able to distinguish the symptoms of the disease and treat his pet.

Bloating

Diseases of zebrafish pink have various symptoms. In this case, the abdomen increases by 2 times. Beginning aquarists confuse this phenomenon with overeating or the presence of eggs, but in most cases this is a sign of a disease. Danios are prone to it, and owners often face this problem.

Danio lies at the bottom, almost does not swim. For treatment, use "Metronidazole" (1 tablet per 30 liters of water). After 7 days, the disease should go away. Such treatment will be useful for other inhabitants of the aquarium, as a prophylactic.

growths

They appear on zebrafish pink extremely rarely. But if this happens, it is necessary to increase the level of salt in the water and the temperature. The fish should be placed in liter jar and add 2 tablespoons of salt (tablespoons). Hold it in this solution for 15 minutes (water temperature +28 degrees), then transplant into a common aquarium. The growths will come down in two days.

Swimming in circles

Sometimes you can notice that the zebrafish begins to swim in a circle, but at the same time remains quite active, reacting to its neighbors in the aquarium. Most often this happens when poisoning. Some specimens are too sensitive to nitrates, so you need to change the water, and change 1/3 of the aquarium water every three days.

bulging eyes

This disease is typical for adult fish. It happens during spawning. The body does not change its color, but the abdomen is significantly enlarged, which at first glance seems natural during spawning. But then, for fifteen days, the eyes of the fish protrude from their sockets, and then fall out. A blind fish dies of exhaustion. A white thick mass is found at autopsy behind the eyeball, which causes bulging eyes. Water Bad quality is the cause of this disease. Treatment: water change (partial) - every 2 days.

Trichodinosis

The causative agent of this disease can be Trichodina ciliates. It has spike-like processes. With their help, it is attached to the fish. This mainly occurs on the gills and skin of zebrafish. It enters the aquarium along with soil, plants, food, if they have not been properly disinfected.

Symptoms of the disease: the fish rubs against hard plants and objects, more often than usual swims up to aeration. With the development of the disease, the body color fades, a grayish-white coating can be seen on the skin. It separates into large flakes.

Treatment of trichodinosis: it is necessary to increase aeration, increase the water temperature to 31 degrees. Such therapeutic baths should be done in a separate aquarium with the addition of table salt or tripaflavin.

To prevent diseases of zebrafish pink, simple rules should be followed. All items that are placed in the aquarium must be thoroughly disinfected in manganese or boiling water.

Beautiful and bright, like precious stones, zebrafish were brought to Europe in 1911. They first appeared in Russia in 1958. The homeland of these fish is Southeast Asia: Thailand, Myanmar, Sunda Islands. The peculiarity of zebrafish is that their translucent body changes color. Sometimes the fish acquires a pink tint, sometimes bluish or olive. A distinctly noticeable reddish stripe with a border runs along the entire length of the fish. In young individuals, it is more noticeable, in adults it disappears completely. The body of the fish is somewhat flattened on the sides. The dorsal and caudal fins are greenish-yellow. The anal fin is yellowish-spotted. If you look closely, aquarium fish zebrafish have small whiskers pointing down.

To date, aquarists breed such species.

Rerio

A silvery fish with a body length of up to 70 mm. The body is dotted with longitudinal stripes of dark blue. There are also stripes on the fins. Sometimes the fins are decorated with a yellowish border.

Devario

These fish, compared to rerio, are larger. They grow up to 100–120 mm. The main background is silvery, with bluish stripes. The gaps between the stripes have a golden yellow tint.

Dangila

Length adult this variety is 100 mm. The main background of the fish is gray-olive, with chain patterns of a darker tint. There are also dark spots behind the gill covers.

Erythromicron

This is a miniature variety of zebrafish, with a length of up to 25 mm. The background is golden with a bronze sheen. The stripes are dark blue, transverse, like brindle. The color of the gill covers and fins is orange with a slight reddish tint.

Burmese

These beauties have a body length of up to 80 mm. Golden specks are scattered on a bluish background. Characteristic of this species is an orange-yellow spot behind the gill covers.

Bengal

The main tone is light gray, mottled with longitudinal bluish and yellow stripes. Bengal danios have a long dorsal. The length of an adult individual is on average 70–80 mm.

Kerry

One of the most beautiful zebrafish. The color of the fins is olive, and the body is bright blue, with two pink stripes. The dimensions of these fish are 50 mm.

Point

In color, they resemble rerio: the same silver with dark stripes. But there is also a difference. At the bottom of the body, the stripes are not continuous, but, as it were, form a dotted line. These fish grow up to no more than 40 mm.

Pearl

The color of these fish is light blue, the length is up to 50 mm. The bluish hue intensifies towards the tail. The tail is decorated with a bright orange stripe, which is hallmark pearl zebrafish.

Pink

Small fish - 45 mm zebrafish. The lower part of the body is painted in a bright pink color. The main tone is bluish-silver. The anal fin is adorned with a pink stripe.

Firefly

Another miniature view. The fish grows only up to 30 mm. The color is bright, sunny, orange-yellow. The area from the head to the fin on the back is decorated with a shiny stripe of a sunny orange hue.

margaritatus

The most colorful and elegant type of zebrafish. The body of the fish is dark gray with yellow spots, and the fins are decorated with bright red (sometimes orange) stripes.

Proper arrangement of the aquarium

Danio fish are classified as schooling. A flock of 5-6 adult fish needs a fairly large aquarium of 50-100 liters. If you have only 3 fish, they will get along well in a smaller vessel, but there is a high risk of stress or aggressive behavior. A small tank of the order of 10-30 liters is categorically not suitable.

Gravel or sand, washed clean, are excellent as aquarium soil. The soil is poured onto the bottom of a dry aquarium and carefully leveled. It is advisable to place plants in the aquarium along the perimeter so that its central part remains free for the movement of fish. Zebrafish are very active. For a normal existence, they need constant movement. The decor does not hurt, especially since the inhabitants of the aquarium sometimes like to hide there. But too many decorative elements are not needed. Nothing should restrict their movement.

For an aquarium, tap water, previously settled, is suitable. The duration is up to 12 hours.

Water requirements:

• Average temperature regime 22-26 degrees.
• pH level from 6.5 to 7.5.
• dH is from 5 to 15 0 .

A set of aquarium devices is standard: lighting device, filter, compressor, temperature control device. The optimal temperature regime for zebrafish (rerio, pink) is 21–24 degrees. For fish of hybrid breeds, more acceptable high temperatures content. If your home is cool, you will need a water heater.

Do not rush to put fish into the aquarium until the nitrogen cycle is established there. Otherwise, it can harm capricious aquarium residents. Keeping fish in a vessel without a stable biological environment is harmful to aquarium inhabitants. Water parameters can be assessed using special indicators that indicate the concentration of substances such as nitrates, nitrites and ammonia. Until a safe concentration of these compounds is obtained as a result of measurements, it is impossible to populate the aquarium with fish. The maintenance of zebrafish is not particularly difficult, but requires a certain scrupulousness.

Watching the fish is a pleasure. If there is enough territory, they get along remarkably well with each other. There are no fights or other manifestations of rivalry. Zebrafish are very mobile. Males are especially active, they love to chase each other. It must be remembered that pets are excellent jumpers and periodically jump out of the water. If nothing is done, one day you will be able to see the pet on the floor or table. Cover the tank with a special lid with ventilation holes. At the same time, it is necessary to leave an air gap of at least 5 cm from the surface of the water to the lid, otherwise the pet may simply break when performing its acrobatic exercises.

It is desirable to maintain an optimal temperature regime, but the inhabitants of the aquarium feel good with a slight increase or decrease in water temperature. But they are extremely demanding on the purity of water. Every week you have to update the aquarium water by about a third. The frequency of general cleaning of the aquarium is once a month.

Most often, zebrafish can be seen in the upper and middle parts of the aquarium. But sometimes they hide in the sand at the very bottom. In order for the inhabitants of the aquarium to have a secluded corner and live comfortably, the bottom must be covered with a layer of sand. It is advisable to plant low-growing algae, but there should be a free place for the fish to play.

Pets do not need constant aeration, but they love the light very much. If duration daylight hours will be less than 10-12 hours, then soon the fish will become less active and mobile, and their color will be less bright.

reproduction

For at home, choose females up to a year old. Approximately 2 weeks before spawning, the female must be kept separately from the males and plentifully regaled with high-quality live food: enchitres, tubules, bloodworms. During this time, the female is noticeably rounded. This is a sign that she is ready to spawn.

For successful spawning, there are from 2 to 3 males per 1 female. Plant them separately in the aquarium. The volume of spawning ground for 1 female is about 10 liters. The water temperature in the spawning aquarium is 26-28 degrees. Under favorable conditions, the female spawns. The males pursue the female, “knocking out” the eggs from her. After this, the process of fertilization of eggs with milk immediately follows. This continues until the female has completely used up the eggs. At the end of spawning, the activity of males drops significantly, and the female, quite round at the beginning of spawning, pretty much “loses weight”.

After the spawning is over, the producers in this aquarium have nothing more to do. The number of eggs for 1 litter is about two hundred. In order to preserve caviar and prevent it from being damaged by a fungus, you need to properly care for it using special antifungal agents. A good antifungal prophylaxis is penicillin (25 thousand units per 10-liter vessel) or a 2% iodine solution.

Two days later, larvae appear from the eggs, which attach to anything they can for 6 days. After 6 days, the larvae turn into fry. The initial feeding for zebrafish babies is ciliates on a banana peel. A week later, brine shrimp and cyclops replenish their diet. With good filtration, it is permissible to give crushed dry food. The amount of food increases as the young become adults. The fry become sexually mature at 6–8 months of age.

How long do zebrafish live

With adequate care, small-sized varieties of zebrafish (up to 5 cm) live for about 3-4 years. Lifespan large species is 5 to 7 years.

Compatibility with other fish species

Danios get along well with such species:

• cockerels;
• angelfish;
• guppies;
• mollies;
• swordsmen;
• pecilia;
• labeo;
• catfish corridors;
• battles;
• with different types of gourami.

Limited compatibility of zebrafish with barbs, shrimps and eels.

Danios will not be able to get along with species such as astronotus, discus, goldfish, koi. They will not be able to get along with cichlids.

Features of feeding

A few words about how to feed zebrafish. In terms of feeding, zebrafish are unpretentious. Therefore, many owners feed their pets with dry food. With good care, fish can live long enough and even give birth, but their immunity leaves much to be desired, and the risk of diseases is greater. For this reason, if it is not possible to give live food to fish, then at least it should be regularly introduced into the diet.

Diseases

Many questions about zebrafish are caused by keeping them during diseases. Sometimes, despite good care, pets can get sick. Here is a description of the characteristic diseases.

Pleistophorosis

The disease begins with the appearance of white spots on the body of the fish, which turn into ulcers. The fins are disheveled, the fish swims at an angle of 45 to 90 degrees, and is very depleted. The aquarium needs to be disinfected, the soil removed from it. A 5% solution is suitable for disinfection of hydrochloric acid or bleach. Fish need to be treated with feed additives.

Medicines:

• Erythrocycline - 50 mg per liter of water.
• Trichopolum - 5 mg per liter of water.
• Methylene blue solution - 10 mg per liter of water.

Those fish whose condition worsens despite treatment should also be destroyed.

Trichodinosis

The source of the disease are ciliates. The fish rubs against plants and objects in the aquarium. The body is covered with flakes of gray plaque. Treatment consists in enhanced aeration of the reservoir. The water temperature rises to 31 degrees. Salt is gradually added to the water (for 10 liters of oxen - 1 tablespoon). The healing process of fish lasts from a week to a month. The salt concentration must be maintained until the complete recovery of the aquarium inhabitants. Then, as the water in the aquarium is changed, the water becomes less and less salty.

Conclusion

Proper maintenance and care of fish, a spacious aquarium, high-quality and varied food are the key to the longevity of your pets. Good proximity to other fish in the aquarium is also important. You can not settle them with large and overly aggressive fish. If these conditions are met, zebrafish will delight you for a long time, and their breeding will turn into a real pleasure.

Hello to all aquarists! In this publication we will talk about pink zebrafish. I’ll explain right away that this species belongs to the breeding form of zebrafish (lat. Danio rerio), and not to those fish that, compared to breeding ones, are considered real pink danios (lat. Brachydanio albolineatus) but also, like rerio, live in India.

Real pink zebrafish (lat. Brachydanio albolineatus)

It should be noted that the work of the breeders was not in vain and the zebrafish gained immense popularity, but at the same time, as I think, some kind of shortcomings appeared.

Danio pink - a breeding form of danio rerio (lat. Danio rerio)

For example, according to my observations, pink zebrafish are more prone to diseases, moreover, breeding fish are somewhat smaller than ordinary zebrafish. But now the elegant pink danios are still just as smart and cheerful, and it is very interesting to watch them.

Description

All zebrafish belong to the carp family of the cyprinoid order. These include long-known and popular with aquarists barbels, danios, loaches and common loaches. They are distributed in Europe, Asia, Africa and North America. All cyprinids lack an adipose fin. Barbels and zebrafish are in many ways similar to characins and occupy an ecological niche in Asia, which belongs to the latter in America. When keeping zebrafish, they need to be given herbal supplements. Caring for offspring is not inherent in cyprinids.

In an aquarium, zebrafish grow no more than 5-6 centimeters. Their body is elongated and painted in a silver tone with bright blue stripes. In young veil species, the fins are short, and when they grow they form a veil. The edges of the fins may be colored yellow. hallmark the difference between the female and the male is the abdomen - in the female it is much thicker. Males are usually slimmer than females. The average life expectancy of zebrafish is 3 years.

Danio pink content

Keeping pink danios as well as their progenitors rerio is not difficult at all. Although danios are not demanding on a large volume of water, they love clean lake water, so the aquarium for keeping pink zebrafish must be with a sufficiently strong biological balance that cannot be created in small aquariums, so the minimum aquarium volume is from 50 liters. Hydrochemical parameters of water: hardness 5-15°, acidity 6.5–7.5.

It should be noted that from different sources recommended water temperatures for keeping zebrafish may vary. For example, somewhere you may be recommended 21-25 ° degrees or even 18-23 ° C. This water temperature must be considered conditional because in real conditions, when keeping zebrafish in a common aquarium, it will have significant deviations.

Think for yourself, because no one will recommend you fish for keeping in a common aquarium at a temperature of 18-23 ° C, knowing full well that the rest of the fish will die from hypothermia and disease. I keep zebrafish at 24 to 26 degrees.

Pink danios tolerate temperatures well and 28 ° degrees, but when elevated temperature in females, eggs mature quickly and the risk of cyst disease increases significantly. Danio rerios are considered to be cold-water to some extent, but when kept in a common aquarium, they adapt perfectly to warm water.

How to feed pink zebrafish

Danios are omnivorous and do not refuse dry gammarus, daphnia and artificial feeds specially produced by the industry. As a herbal supplement, they can be given steamed and well-washed semolina or just fluff white bread. Among artificial feeds, grated beef heart is adored. But the menu of fish should not consist only of dry and artificial feed. To maintain their health, they need to be fed with live food.

Of the live foods, zebrafish love: small bloodworms, coretra and daphnia. When necessary, and especially winter time for them, you can cultivate live food at home. For example, daphnia moina is well suited for these purposes.

Danio fish are fast and mostly stay in upper layers water and when making feed, they are full in the first place.

Danio pink compatibility with other fish

All zebrafish are peaceful species. Friendly medium-sized species of fish are well suited for joint keeping: guppies, mollies, swordtails, platies, gourami, neons, thorns, barbs, angelfish, tarakatum catfish, corridors and others.

Diseases of zebrafish pink

Danio pink are quite hardy and unpretentious, but they get sick along with other species. The most common disease is ichthyophthyroidism . Symptoms of the disease: scratching of fish on the ground, compression of the fins and the appearance of fish and fins on the body white plaque in the form of small grains (semolina).

I have bred zebrafish many times and will tell you that these fish are very easy to breed. Young individuals willingly go to spawn, and spawning can be observed even in a common aquarium. Once I had to observe the appearance of fry preserved in the thickets of plants. The fry, feeding on infusoria and the remnants of food, grew up, dared and joined the flock.

There are two ways to arrange zebrafish spawning, with and without preparation. In the first case, about a week before the planned spawning, it is necessary to separate males and females. For example, I do it this way: I put males in the spawning ground and after 4-5 days I put females next to them. The second method depends on random spawnings in the general aquarium, and since such spawnings are unforeseen, it is not necessary to plan them for some time.

However, if half or a third of the water is changed in the evening, spawning will most likely begin in the morning. In this case, you need to catch spawning fish and place them in a spawning ground where spawning, as a rule, will continue successfully. I used this method many times and we can say that it is 99% without failure.

Spawning zebrafish pink

This time I breed pink zebrafish. There is absolutely nothing new for me. I have live food and a well-established technique for raising fry. I breed these fish because they are beautiful and a well-bred flock should definitely decorate my aquarium. I brought pink zebrafish from the city of Ruzaevka when I was on a business trip there.

Initially, I did not plan to purchase, but just before leaving, I decided to visit a pet store to buy some kind of fish as a souvenir. Since zebrafish are hardy, and I needed more than 12 hours to go home, the choice fell on pink zebrafish. And I planned to breed pink zebrafish upon arrival home back there in Ruzaevka.

Danios are undemanding to the size of the spawning tank, and the one who bred these fish knows well that you can use just an ordinary three-liter jar for spawning. But this option is not considered preferable because the fry that have appeared will still have to be moved to a nursery aquarium, and this is associated with a certain risk of losing them.

Well, if it’s already on, then it’s time to move the fry from the jar to the nursery aquarium in the right way. It is unnecessary to suffer and catch fry with a spoon, ladle or net. Also, you can’t pour them out of the jar, but you just need to put the jar in an aquarium in which the water level is higher, then place a hose with a sprayer in the jar and turn on the aeration quietly. A small stream of water will help the fry get out of the jar.

For breeding pink zebrafish, I will use a 20 liter spawning tank. I will set up aeration and set the heater to 26 degrees, and as a protective net I will use a synthetic rope untangled and crumpled, and then pressed on top with stones.

The net does not cover the entire bottom of the spawning ground, but this, as they say, is even on hand and it will be unnecessary for me to eliminate the excess part of the fry. I will place the grid in the center because I think this is where the middle part of the spawned caviar will be preserved.

Spawning in danios can be paired, but if the males are no longer young, then two or more males are planted with one female. I planted one female with four males in the evening. Among the selected males were males with the following color variation: two males brightly Pink colour, one with a dark pink tint and another male with a rerio variation, which for some reason did not participate in spawning at all.

Spawning began the next morning. It lasted about an hour, after which I immediately transplanted the producers into a common aquarium. On the third day the larvae appeared, and on the fourth or fifth day the fry swam.

Fry zebrafish pink

Since Daphnia nauplis for tiny fry were still large, I used boiled yolk as a starter food. But I only managed to feed the yolk for two or three days, because the fry had already begun to eat daphnia, which I put on the fry as soon as they swam.

As orderlies, I always used ampoule snails, but this time I didn’t have them, and I planted a small ancistrus in the fry, which also coped well with its task by eating fallen yolk particles from the bottom.

Malkov fed the yolk from his finger, that is, without washing the yolk, since the milk, consisting of microparticles of the yolk, which muddies the water, was eaten by daphnia, and the water was constantly clean and transparent. The pups are three weeks old today. They already eat scraped beef heart and the largest of them can be transplanted into a community aquarium.

In the grown flock there were fish with different color variations: pink, dark pink and white albinos. The appearance of albinos suggests that the pink zebrafish as a breeding species is easily split and for its preservation it is necessary to constantly select.

Usually it does not create any problems in the growing process. But, like other inhabitants of the aquarium, she can get sick and therefore you need to know how to cure a pet.

When buying a Danio, special attention should be paid to the integrity of the skin and fins. At the same time, the fading of the color does not always indicate illness, just moving - transplanting during the sale process could cause a shock.

But even if the zebrafish looks healthy, it must be kept in a separate aquarium in quarantine for a couple of weeks.

Danio fish are very disease resistant. And yet, despite the fact that she gets sick very rarely, you need to have aeration in the aquarium.

For the correct maintenance and prevention of diseases in zebrafish, the regimen is very important. clean water. When feeding her, one must adhere to the rule - it is better to underfeed than to overfeed. It is overfeeding that is usually the cause of the disease.

Also, for the prevention of diseases, it is necessary to adhere to simple rules. All items brought into the aquarium must be disinfected: in a manganese solution, in boiling water or with other disinfectants.

Consider the main diseases and methods of how to deal with them in order to meet the problem with all weapons!

The main diseases of zebrafish pink

Bloating

Danio pink very fat

The first signs of the disease are - an increase in the belly by 2 times. Some aquarists confuse this with overeating or caviar, but in most cases it is bloating.

Zebrafish are prone to it and very often their owners are faced with such a problem. Danio lies on the bottom, practically does not swim, does not contact with fish, and the stomach is much larger.

Treatment - metronidazole (1 tablet per 30 liters of water). In a week the disease should pass. For prevention, you can “drink” other residents in the aquarium - there is nothing wrong with that.

Danio pink swims sideways

In some cases, the fish begin to swim in a circle, but remain quite active and react to other participants in the "movement". As a rule, this behavior occurs when poisoning. Some individuals are very sensitive to the amount of nitrates, so you just need to replace the water with normal composition and periodically (1 time in 3 days) change 1/3 of the aquarium water.

growths

There are practically no such growths on zebrafish, but if such a disease occurs, then you just need to increase the salinity of the water and the temperature. Separate the fish into a jar and add 2 tablespoons of salt. Keep it there for 15 minutes at +28 degrees, then put it back in the general aquarium. The fluffy growths will die and disappear in a couple of days.

bulging eyes

Most often suffer from bulging eyes. The disease usually strikes them at the age of several years during spawning. The color of the body does not change, but the abdomen noticeably increases, which looks natural during the spawning period. For two weeks, both eyes protrude more and more from their sockets, then one by one they fall out. Blind fish die from exhaustion. At autopsy, a thick mass is found behind the eyeball. white color, which causes swelling. The reason is poor quality water. Treatment: partial water change every 2 days.

Danio pink turned white

Trichodinosis

The causative agent is the ciliate Trichodina, which has spike-like processes with which it is attached to fish. Localized on gill filaments and skin. Enters the aquarium along with plants, soil and food if they have not been properly disinfected.

Signs of illness: the fish begins to rub against hard objects and plants, more often than usual swims up to aeration bubbles. As the disease progresses, the color of the fish fades, a greyish-white coating is visible on the skin, which is separated by flakes. Treatment of trichodinosis: increased aeration, raising the water temperature to 31 degrees. Therapeutic baths are made in a separate or shared aquarium with table salt or tripaflavin.

Danio pink is losing weight

Tuberculosis

How to carry out treatment? It is best to feed fish food with kanamycin or rifampicin.

You can simultaneously add these drugs to the water of the aquarium or a special jig in which the treatment is carried out.

If the fish no longer eats, but you really want to save it, then you need to besiege it and add medicine to the water.

Kanamycin - 3 g per 100 liters, rifampicin - 600 mg per 100 liters of water.

Antibiotics should only be added to the aquarium if absolutely necessary. They kill nitrifying bacteria in the soil and filter, and the failure of the biological balance in their application is inevitable.

Introducing antibiotics into the feed would be the best solution to the problem. The easiest way is to soak the bloodworm (preferably alive, but high-quality ice cream is also suitable) in a strong solution of kanamycin (0.5-1 g per 50-100 ml of water) for half an hour or an hour, and then feed it to the fish.

One feeding per day should be done with this food. Noticeable improvements occur after a week's course.

After two weeks, the fish begin to look quite healthy and the treatment can be stopped.

For prevention, it is worth conducting monthly weekly courses. It is difficult to saturate other feeds with antibiotics. It will wash out very quickly, which will adversely affect the beneficial microflora of the aquarium. So bathing bloodworms in medicine is the right thing to do.

Danio pink is losing color

Alkalosis

Symptoms:

• Cough,
• Excited behavior
• Jump out of the water
• Labored breathing
• scratching
• Bloating
• Lightening of the color
• splayed fins
• Excessive mucus production

Acute alkalosis: dullness of the skin, splayed fins, rapid breathing are observed in fish, mucus is released from the gills, the fish begin to rush around the aquarium, tend to jump out of it.

Chronic alkalosis: Less obvious signs include difficulty breathing and "coughing", excessive mucus production, and itching of the skin as a result of irritation caused by acidity or alkalinity in the water. Problems with osmoregulation caused by chronic alkalosis can lead to bloating

This state occurs when the pH aquarium water above the pH range optimal for the species.

This disease does not necessarily affect all inhabitants of the aquarium, because the fish different types differ from each other in their acceptable range of pH values.

The disease can be acute if the change in pH occurs quickly, or chronic if the change occurs gradually over a period of time.

Alkaline water irritates the outer surface of the fish's body (including the gills) and can cause adverse physiological changes.

Treatment

An appropriate pH level must be set. This can be achieved with a suitable pH buffer (available at pet stores).

For slow pH adjustment, it is best to use repeated partial water changes, with fresh water having a pH close to neutral. This is the most The best way solutions to pH problems, since repeated partial water changes will eliminate main reason- reduce too high mineral content, which usually leads to chronic alkalosis.

Preparations:

• pH buffer
• timely water change

Prevention:

Prevention. Alkalosis can be prevented by selecting fish species that have a suitable pH in the aquarium, or by adjusting the pH to suit the intended inhabitants of the aquarium while being pH compatible.

Choose the design of the aquarium in such a way that it does not adversely affect the desired chemical composition water. Check the pH value regularly to detect the first signs of leaching due to calcium contained in aquarium decorations.

Acute alkalosis: Survival of sudden significant changes pH is unlikely unless the pH is returned to normal level. If the pH is returned to normal gradually, then the fish will be exposed to the harmful effects of an unsuitable pH for too long.

However, acute alkalosis is usually fatal, even if corrected quickly. Thus, it is very important to determine the cause of the problem and take necessary measures to prevent it from happening again.

Chronic alkalosis: it is necessary to slowly change the pH so that it falls into the optimal range for the fish. The rate of change in pH should not exceed 0.3 units. per day, so that the fish have the opportunity to gradually adapt to the changes.

There is a risk of infection accompanying or following alkalosis. Such an infection is possible as a result of stress-induced suppression of the fish's immune system (especially if this problem is chronic).

Due to an unsuitable pH value, gills and skin membranes are damaged, as a result of which they become vulnerable to secondary infections.

Danio rerio is one of the most popular and funny types of fish, which differs from the rest in its ability to jump out of the water.

However, the maintenance and care of zebrafish is quite simple, these fish are unpretentious and non-conflict. Due to their amazing color (and there are 12 species), they always become an adornment of any aquarium. In our article, we will share with you tips on keeping and caring for zebrafish so that your tiny pets always feel good and for a long time continued to delight you with their playfulness and beauty.

Since in the event of danger approaching, these fish can jump out of the water into the air so that the pet is not lost, the aquarium should always be covered with a lid. The optimal distance from the water to the lid is approximately 3-4 cm, so that when jumping out, the fish does not hit a hard surface and does not get hurt.

Danio rerio live in groups. Therefore, if you decide to purchase them, buy 8-10 individuals at once. Since the size of these fish is small - about 4 - 5 cm, an aquarium with a volume of 6 to 7.5 liters is quite suitable for their comfortable living. Optimum temperature water for zebrafish should be about 24 ° C. Although these fish will react quite calmly to its slight changes.

If you want to breed zebrafish yourself, then you need to prepare another aquarium - a spawning tank. The water thickness in it should be no more than 6-8 cm. After spawning, the female and male are seated in different aquariums, after which, after 7 days, the female is again launched for re-spawning in order to avoid her infertility.

Feeding zebrafish is also an important process. For this, dry or live, suitable for this type, is suitable. It is very important that the food is crushed, otherwise the fish will not be able to swallow large pieces.

Zebrafish compatibility with other fish

If you have replenished your home living area with these beautiful aquatic inhabitants, you can be calm, because zebrafish get along well with most types of aquarium fish. They get along well with catfish, tarakatums, neons, tetras, gouras, laliuses, swordtails, ancistrus, platies, iris, rasboras, mollies, bots, guppies, cockerels, scalars, catfish Corydoras and Labeo. Also, "danichki" get along quite well with snails, shrimps and snails.

Despite the good compatibility of zebrafish with other fish, there are some warnings. If you have a barb or some other type of more aggressive fish living in your aquarium, do not place a veil zebrafish with them, because. more nimble occupants may damage or bite off their veil and long fins.

Diseases of zebrafish

Unfortunately, despite all the charm and unpretentiousness of these fish, they have one flaw. This is a congenital zebrafish disease that appeared from breeders - a curvature of the spine. The main symptoms are raised scales, gills splayed to the side and slightly bulging eyes. Most often they all appear after a fright. A few days later, the central vertebra begins to bend in the zebrafish, and as a result, after a while the fish dies.

A well-known disease of zebrafish is also dropsy. Fish have rearing scales, eyes bulge, belly swells and eventually death occurs.