Danio Revio

The zebrafish does not differ in bright expressive coloring, they can rather be described as simple fish. But they love the zebrafish for their mobility and speed. In large aquariums with slow-moving zebrafish, they introduce a little movement. Aggressive zebrafish can soothe. And just to observe the rapid movements of the zebrafish is very interesting.

All danios have elongated body shape, which narrows to the tail and head. On the whole body there is long longitudinal strips, which start from the gill covers andend on the caudal fin. In the zebrafish, yellow-green or straw-yellow stripes with black and blue alternate in color. The same stripes can be seen on the fins of fish, but their color is not so pronounced. By the way, there are two forms of fish: with ordinary and veil fins.

Contents of zebrafish

Danio perfectly tolerate a gradual decline andincrease in temperature from 15 to 30 ° C, so you can keep them in any aquarium. Since fish are not the largest size, they can be kept even in small containers. But nevertheless it is necessary to keep zebrafish groups of 8-10 individuals in a long aquarium, so that the fish have a place to swim. Hold the zebrafish in the middle and upper water column, swimming between the algae. Take care that there are plenty of algae along the sides of the aquarium, but leave the central part open.

To keep fish optimal temperature within 18-24 ° С. Water hardness should be kept at a level5-20 °, pH - 6-7,5. Feed zebrafish can be any food, both live and dry substitutes. These fish are different in that they always somehow manage to eat with any neighbors in the aquarium.

Contain any zebrafish, not just a rheo, followed in a closed aquarium. This is due to the fact that, frightened, Fish can jump out of the water.

Danio-rheo: reproduction

Danio is very easy to breed, but to spawn the producers successfully, you need to create the fish the right conditions. At any time of the year, females and males are planted in different capacities and are abundantly fed only by live food. It is very simple to distinguish females from males.the first is a more inflated abdomen. Readiness of females to spawn can be determined by the shape of their abdomen: it should be swollen not only on the sides, but also in the anterior and posterior parts. It is very important not to overdo the females for too long, otherwise the caviar will overripe. Such females will not spawn.

When males and females are ready to spawn, at night they are transplanted into a small container with a transparent bottom (this can be a small aquarium up to 10 liters orthree-liter bank). In the tank for spawning, there must necessarily be a net for spawning and plants. The water in the aquarium should be fresh and stable, at a temperature of 20-24 ° C. In one prepared container for spawning it is recommended to plant 1 female and 2-3 males. When fish appear in the aquarium, it is desirable to gradually raise the temperature by 1-2 ° C. Spawning begins at sunrise or when artificial lighting is switched on.

The entire spawning process lasts no more than one hour, after which the fish are recommendedotsadit. From the spawning net, eggs are shaken off. At a temperature of 26-28 ° C, fry appear within 30-36 hours. At lower temperatures, the appearance of fry can last for a week.

It should be taken into account that at the end of the first mark, males and females are again planted in separate vessels. And a week and a half later the fish are again planted together for the next spawning. Females can give 5-6 litters in a row, so here it is very important that the zebrafish in the zebrafish is not overripe.

When the zebrafish fry are removed from theeggs, the first few days they hang in the water, attached to glass or plants. A few days later the fry begin to swim. In the first few days of life the fry must be fed infusoria or "dust". Then, as the fry grows, you can switch to a larger feed. Also do not forget to transplant the grown fry to larger aquariums, as the fish become cramped.