Danyo hopra

Данио хопра

Danyo hopra (firefly) appeared behind the glass of the aquariums of the world only in 2003. Nevertheless, has already found its regular adherents. What contributes to the simplicity of content, peaceful disposition, as well as a very beautiful coloring. This is the smallest fish of the genus. Its length rarely reaches three centimeters. And the usual size for her is about two and a half centimeters. As all representatives of the genus, she likes to stay in a flock. These mobile flocks look very spectacular in any aquarium with suitable conditions for these fish.

classBony fish
speciesDanio choprae

Latin: Danio choprae, Brachydanio choprae;

Habitat.: In the wild, the firefly generally prefers slow-flowing waters. It is considered endemic to the tributaries of the Irrawaddy River basin between Namma and Kamaing towns of Kachin State in Northern Myanmar (Brama).

Danyo hopra description

The fish is small, the body length rarely exceeds three centimeters. The body is oblong. The color of the body is silvery olive in the upper part along the body stretches a longitudinal red stripe, under which closer to the tail end there is a series of transverse stripes of wet asphalt color.

Данио хопра
оливковый фон с оранжевым узором

The fins are almost transparent. The anal fin extends to the caudal fin. The caudal fin has a forked shape. The location of the mouth – upper. Prefers to stay in flocks. Firefly likes a clean, transparent environment. Can be in all horizons. This firefly is an excellent swimmer and jumper. Life expectancy is about three years. Sexual maturity is reached in the sixth to eighth month of life.

Danyo hopra Differences between the sexes

Различия полов такие же, как у других представителей рода Danio. Самцы несколько стройнее своих подружек, брюшко которых заполнено икрой. Самки имеют более бледную окраску.

Danyo hopra Keeping in the aquarium

The content is very simple, most likely will not cause any difficulties even for a beginner.

Even a five-liter container is enough to keep a couple of fish. But it is better to keep them a flock of seven or ten individuals. For such a flock needs an aquarium of at least thirty liters, preferably oblong shape, so that these sprinters were where to accelerate. The tank must necessarily be equipped with a lid, so that accelerated well, these fish did not jump out of the water and did not end their lives on your clean washed floor.


Danio hopra will look better against the background of dark soil. You can use granite crumbs (it is desirable to take gray granite), small pebbles. The standard proven variant – coarse gray river sand – will also be suitable.


To plants these fidgeters do not make any requirements, but look better against the background of emerald thickets of plants such as Wallisneria spiral, pistolistnik herringbone, elodea Canadian. Sometimes it is recommended to lay on the bottom of the moss for the preservation of eggs, if they want to spawn in the general aquarium. In my opinion, there is no sense in it. Spawning in a common aquarium is desirable, as it prevents the formation of cysts in females, but the litter without preparation for spawning, most likely do not get. Firefly so rapidly picks up just flushed out eggs that it does not have time to fly to the bottom shelters. So if you want to decorate the bottom with mosses it can be done for decorative purposes, but the eggs from eating will not save.

Water parameters

The genus Danio is generally quite indifferent to the parameters of its habitat. Danio hopra is not an exception. The temperature can be in the range from 20 to 28 ° C. Optimal for simple content 22-24 ° C. Water hardness can be up to 15 °dH. Acidity should be around neutral pH 7.


Danio hopra will benefit from high illumination, as well as justify fully one of its names – firefly. Lighting should be provided by fluorescent lamps LB. Their total power should be approximately 0.5 W / l.


The need for additional artificial aeration is determined by the overall population of your water body.


Filtration is desirable. Since fireflies like clear water, you will be grateful for the installed filter that sifts out particles of turbidity. Combined aeration and filtration systems can be used.

Danyo hopra Compatibility

Danio Hopra is a small species, peaceful enough to harm anyone directly. But their approaching the first cosmic speed of movement in the aquarium, can frighten the inhabitants of your underwater kingdom with a weak nervous system. And during the chase for food pack of these small robbers can simulate a robbery attack with the purpose of robbery, even in relation to large enough fish. So it is better to keep them or with a very phlegmatic catfish or with the same impetuous fidgeters like themselves. You can in particular keep them with other species of the genus Danio.


Despite their small size, these gluttons have an appetite. They will eat any menu you offer. You just need to make sure that the food is of the right size. Small moths, cut tubeworm, daphnia, cyclops. They will not refuse and dry and frozen dishes. Dry food should be lightly crushed before serving, and frozen food should be defrosted.

Данио хопра
самцы несколько стройнее и ярче

Danyo hopra breeding

As mentioned above, Brachydanio choprae can also spawn in a common water body. From the point of view of preserving the ability of the female to reproduce, this can only be welcomed. But to get a brood it is necessary to carry out elementary preparatory work for spawning. Spawning is desirable to plan in the spring, when you can get a small live dust. A week before the proposed spawning females and males are planted in different containers and fed live fodder. In the meantime, you can engage in the equipment of spawning grounds. For which you can use a container of thirty liters.

The water should be allowed to stand for two days. Adjustment of hardness is usually not necessary. The level of liquid in the spawning tank should be no more than 8-10 centimeters from the separator net or plants covering the bottom. Only under such conditions, part of the eggs will have a chance to reach the bottom, avoiding being eaten by parents.

Preparing the spawning tank

The bottom should be covered with a separator net. Its mesh should be such that eggs can easily fall through it and adult fish cannot pass through (one and a half to two millimeters). The distance from the net to the bottom is approximately two to three centimeters. If there is no suitable mesh, the bottom can be covered with plants slightly pressing them with small stones. After all the preparatory work is complete, in the prepared vessel let a flock of fish with a predominance of males. Gradually increase the temperature to 26 – 28 ° C.

If all the stars in the firmament are positioned correctly, then the next morning, as soon as the first rays of sunlight illuminate the water, spawning will begin. After the end of spawning, the producers should be immediately removed before they decide to replenish their strength by eating eggs. Incubation lasts about 72 hours. And after a couple more days, the fry will swim and want to eat.

Caring for fry

The fry are small, so the starting food for them is infusoria. After about a week they can be given the smallest plankton. Further feeds are enlarged as the young grow. If there is sufficient experience, you can try to feed dry fodder or the yolk of hard-boiled chicken eggs. But in this case, the results will certainly be somewhat worse.

Danio hopra appeared to our amateurs quite recently. Therefore, the firefly still keeps many secrets, both about the content and reproduction. Perhaps these secrets will be revealed to you. Be patient and observant, and this playful fidgeter will bring you many happy moments.

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