Fish digestive system is very short (for example: it is 10 times shorter that swine digestive system) and that is why fish feed must be light. Both dimensions and shape of pellets must be adjusted to size of fish. Besides, in water pellets must behave according to habits of fish: sink or float on surface of water. And this feature of feed depends on pellet density.

Quality requirements of fish feed

There are carnivorous fish (salmon, trout), omnivorous fish (carp) or herbivorous fish (crucian). Selecting a proper formula for a given kind of fish, we should pay attention to their nutrition habits. Bed fish usually consume food at the bed of water basin and eat 6 times slower than carnivorous. The food for them should not move in the water. Raptorial fish catch the food during slowly fall onto bed and that is why this kind of fish does not eat close to the bed. Shrimps and other crustaceans nourish only at the bed of basin. This is the reason why their food must not dissolve in water within few hours.

Kinds of food for fish

Depending on product density we can get food with different properties, which are appropriate for their nourish habits, which are explained below: food floating on surface of water – for warmwater fish slowly sinking food – for raptorial fish, which like cold water sinking food, water resistant, for warmwater fish sinking food, extremely water resistant, for shrimps and other crustaceans In growth phase fish can need pellet up to 12 different sizes, from 0,05 mm to 12 mm. If the given food is too big or too small, fish will not eat it.