Rus Articles Journal

Than it is the best of all to feed aquarian fishes?

If to ask any aquarian: Than it is the best of all to feed fish? the answer will be one: Live forage . And answering the question What? usually call a crank, a trubochnik, a zhivorodka, a Cyclops, the water flea, a koretra...

But not these, most likely, are found in places of natural dwelling of tropical fishes, and other species of insects, worms and Crustacea? And it is natural to assume that exactly thanks to them fish would grow better and would be more beautiful.

There was no case that someone told that artificial forages or their mixes can replace live forages completely. However there are all bases to assume that in the near future they on polnoratsionny kormosmesyakh of fish in our aquariums will breed, it is not worse to raise and develop, than on live.

Live forages of tropical reservoirs can appear not better than our live forages (northern reservoirs) as it is known that the same species of fish, living in different reservoirs of the same climatic zone, and even in close located reservoirs can eat different organisms. Moreover, even in the conditions of an aquarium different individuals of the same look, age, the size and a floor can prefer different forages.

We will give only two examples to show, the question is how difficult: What does fish and what forage is better eat? In east part of the Northern Caspian Sea the vobla eats mainly mollusks less often than Crustacea, and in the western part - on the contrary, mainly cancroid less often - mollusks. The bream in the western part of the Northern Caspian Sea, unlike a vobla, eats mollusks, and in east - Crustacea.

It is necessary to add to it that fish under natural conditions can eat favourite food only under favorable conditions. Besides, the similar food not always promotes growth and development of fish. The structure of food at fishes of the same look changes as during life (in process of growth and development), and within a year - on seasons. Studying of food of fishes under natural conditions shows that the main food usually consists not of one, and from several (2 - 6) types to which share 50 - 75% of all food fall, minor - consists of 5 - 6 types (15 - 30%), can be a part of insignificant food to 25 types, but on weight they make from only 4 to 10%.

E. M. Malikova for the purpose of development of structure of the dry granulated feeds which are not differing on a nutrition value from live studied biochemical structure of 22 types of invertebrates from various systematic groups. Results showed that all of them contain enough the full-fledged protein on amino-acid structure close to protein of fishes, and on the content of mineral substances and vitamins the fresh, not subjected to drying and freezing Crustacea were a full-fledged live forage only there are water fleas. The crank contains very few mineral substances and vitamins, especially B1 vitamin. Enkhitreida (worms) differ in the small content of mineral substances, vitamins A, B2, carotene and total absence of B1 vitamin. Caddis flies and koriksa (insects) contain not enough carotene and mineral substances, vitamin A completely is absent.

Results of these researches demonstrate that even when using live forages full value of a diet can be provided only with a complex of the nutrients coming to an organism of fishes from different systematic groups of animals. They explain as well the reasons of those failures which often accompany long cultivation of fishes when feeding with one type of a live forage.

Annually the aquarian faces that for any reasons (more or less long time), he does not manage to get any live forages and he is forced to feed the pets dried with the water flea, gamma fair-haired or a crank. On nutritiousness they considerably concede to initial live raw materials. At food by these sterns some fishes lose ability to reproduction, their growth and development are slowed down, coloring worsens. Not less important and the fact that dried gammarus, the water flea and a crank - strong allergens - at prolonged use they cause in people of a disease reminding asthma. Some doctors, without knowing a true cause of illness, advise to clean an aquarium. However here it should be noted that it plays an improving role: removes stresses, increases humidity of air in our dry apartments.

You should not forget that modern technologies of preparation of dry feeds allow to receive very good results. Upon purchase of a dry feed pay attention to the producer, and to a forage expiration date. Good forages has low periods of storage.

When using dry feeds you with guarantee will save the pets from various infectious diseases which often arise when using a live forage.