Danio — breeding fish in aquarium
The hobby in our country has deep roots. If you remember zolotnyts'ke on the books which he studied mother nature millions of Russian biologists, it becomes clear the popularity of this hobby. Nothing relaxes and does not adjust to the calm mood, as the contemplation of the Pets that leisurely swim in the crystal clear water, "hovering" between the beautiful plants.
Beginners are especially popular among different types of zebrafish reproduction which quickly learn even the most inexperienced breeders. These fish are not too afraid of low temperatures, virtually omnivorous, and have well pronounced sexual dimorphism. It provides ease of keeping and breeding. However, let us focus on the issue of generating offspring in more detail.
Why are we described in the article is that? Yes, just the fact that the word "Zebra" at least 99 percent of the aquarists imagine that these nimble fish, which immediately catch the eye because of its coloring.
Features of reproduction
Frankly, any difficulties with this process arise even beginners who first started Danio. Reproduction can be complicated only by the fact that these fish spawn, not live birth like guppies or swordtails. However, not all so horrible.
First, before breeding, you should separate individuals into male and female groups, which must be placed into separate aquariums. How to distinguish females from males? It's simple: females are noticeably more rounded belly, and the color of the stripes on their body stands out more clearly. During this period the selected fish healthy and quality food.
Aquarium masters say that at this time in the diet of the fish should enter mainly koretra. It contains almost all the essential nutrients, but it lacks fats.
This is extremely important, as manufacturers in no case should not lose before spawning form. However, all aquarium fish zebrafish reproduction of which here is out of shape, the ability to spawning almost always lose.
As the size the fish are small, and for them to pick up big "trough" for spawning is not necessary. Quite suitable for a modest aquarium on ten liters. Since these fish come from small and rather small bodies of water, its depth can not be more than 20 cm.
The bottom is in any case impossible to lay solid ground, which can hurt Danio! Reproduction must assume the maximum comfortable and safe environment. The best would be to lay peristaltic. However, in the absence of alternatives may come and conventional canadian canadian.
The plants do not pop up and not unmasked swept away the eggs, it should be a little pin down small stones. Of course, these should be boiled or calcined, in order not to bring in an aquarium any infection. Experts say that for this purpose it is best to use glass rods that are much easier to subject to disinfection. In General, the reproduction of zebrafish in the aquarium represents the maximum purity.
If you set out to best protect the eggs not only from disease, but from the producers themselves, better to buy a special grid. Typically, such materials are stained green and the cell size is such that adult fish can't squeeze through them. Above the plants or by the grid should be at least five inches of water.
As in all such cases, the most stringent requirements apply to the water. As many Asian species originating from regions with a large number of fish, the Danio to spawn in need of fresh and waste water. Before filling the aquarium, it is necessary to sustain it in the next couple of days. If your location has water regularly add chlorine, the exposure time should be increased.
Note that the water should be harvested from a stock. After spawning, it is more useful to you.
Heat the water to about 24-26 degrees Celsius, the launch of Danio in there. Reproduction begins with the evening in an aquarium populated with selected group of producers.
As a rule, for breeding you want to pick up a group of a pair of three active males and one female. Inspect the abdomen is the last in the anal fin, it should be markedly thickened. In addition, be sure to select a place that will put the spawning tank in the morning should fall on him first rays of the sun.
By the way, this is exactly the difficulty for many fans of aquariums. Almost all types of Danio fish, the reproduction of which occurs at dawn. The female lays in the range of 400 eggs, although young individuals rarely leave more than 50.
If spawning did not happen immediately
If spawning at once was not, do not despair. Manufacturers can be kept in the spawning tank a day. They should be fed a small amount of fine and well-washed bloodworms, avoiding contamination of water. In the case when and the next morning nothing happened, the fish need to divide by gender, stand in a separate aquarium for about three or four days.
Important! All Danio fish, the reproduction of which is essential biological mechanism. Simply put, if during the week after the first attempt of spawning you again put the female for spawning, in 70% of cases, it loses the ability to reproduce.
What to do after spawning?
First of all you need as carefully as possible to catch from the aquarium of the parent birds, using a wide net. Sudden movements is better not to do. Then very carefully pour about half of the water that is in the aquarium. This requires the use of a wide siphon, a bell which is better to wear a gauze filter.
After this fill there the water has been prepared by us in the form of stock (see above). Pour it slowly and carefully as the composition of the liquid in either case would be different. If you pour all at once, some eggs (if not all of them) can die.
Approximately three to four days larvae appear. At first, feed them infusorians, with the growth becoming more serious food. Fast growing juveniles, special problems with it did not arise.
Bred pink Danio
But what about other aquarium fish? Pink Danio, a reproduction of which differs little from the process described above, still require more attention.
Start with the fact that the ratio of females and males at spawning — 1:2 or 1:1 (rare). Males of this species are much more active, and therefore a large number of them can lead to death of the female, which manufacturers are active just driven.
The second difference is water. While zebrafish can move the eggs in almost any conditions, their pink counterparts prefer 10°dH (permanent hardness) and pH=7. In most regions of our country water hardness are much higher, and therefore it will have to be diluted or boiled, or distilled.
Like many aquarium fish, Danio rose (a reproduction of which we are discussing) popular in the spawning season increased temperature. In this case, it should be about 26-28 degrees Celsius.
Is there still any differences? No, all other manipulations are absolutely identical
By the way, is it possible the breeding of Danio in a community tank? Yes, and that happens all the time, especially for the inexperienced beginners. That's just a fait accompli spawning you hardly ever know, as the caviar greedily eat not only the parents, but also other inhabitants of the aquarium. Even if some eggs are incredibly lucky to develop to larvae, it will still eat.