Emploisjeunes.org

For fish to breed successfully in the aquarium, they must be healthy and feel that in all circumstances. In general, it is difficult to keep fish caught in the wild because they are more demanding in their requirements, but also the most unpleasant types can be raised by experienced aquarists. Grown after the first few generations of breeding more and more difficult because the “breeders easily be elected by the people.

So the fish are contained in the first imports, high prices are very cheap and the principles of livestock knee. For example, neon and the cardinal were originally bred and very expensive and very difficult for the specialist, but now the two standard fish aquarium, all bred and readily available at reasonable prices.

Among the species not easily grown, are those who will be very high, and where only minors are kept in the aquarium. Some African catfish in this category, as many marine fish. In general, however, reproduction can be achieved if the environment and the biology of fish is well understood.

A remarkable element in this race is that while the farmer can choose from many natural mutations exacerbates the final round with unusual colors or fins, and the development of new varieties, but also the overall quality is in captivity. For example, it is rarely possible to the large dorsal fin on the sail to get Molly, or brightly colored cichlids cichlid Apistogramma because these fish are bred in captivity. Stocks of wild fish are colored bigger, stronger and lighter.

Considerations of livestock have led to many interesting behaviors of fish. Color can also be attributed to the discipline must be reduced. Often, men and women and men of different colors of fish is very colorful both to attract females and deter rival males.

Most fish do not occur constantly. To the discerning eye to choose fish, twinning was the best condition when they reach for the discipline. Fill the pages of fish, and females with eggs packaged very uncomfortable. Coloring is usually intense, and men can see the female with wings stretched tightly. When spawning is imminent, there is often a change in fish behavior: they tend to be very active and to explore potential spawning sites.

The organs of fish is relatively simple, consisting of paired, elongated organs located along the abdominal cavity, or that agencies produce eggs or sperm (spleen). Almost all fish scales both eggs and milk together in the water, where fertilization takes place. But a couple who live there are carriers is the man who made his chief of mission in the female, who retains the fertilized eggs and give birth to live young. The Guppy is the best known of these fish.

The fish eggs are delicate and sensitive, and are eagerly eaten by most species spawn for many, even their own consumption. Several special techniques have been developed for the survival of eggs, fish, or at least enough for them to ensure the continuation of the species. In fact, developed the method of most fish is to produce such enormous quantities of eggs, some linked to survive.

These increases are usually egg shoaling fish that breed in a group. Our common river fish of this species, and therefore their alien parents are kept in the aquarium. Fish like Barbs, Danios, and all Rasboras disperse their eggs in plants. Sometimes the eggs are sticky, and are connected to the equipment, but most are simply falling to the ground.