sera guide - Shrimps and crayfish

24 Feed according to nature Both crayfish and shrimps are omnivorous animals, i.e. they eat herbal and animal food. Their natural habitats mostly provide rather few plants but an abundant variety of leaves and wood that have fallen into the water. This decomposing organic material (debris and sludge) along with the micro organisms growing on it (fungi, bacteria, protozoans) and algae serve as an important nutrient source. Anything the crusta- ceans can find and catch will add to the diet: small organisms such as snails, mussels, worms, sometimes even small fish, but often also carrion or ripe fruit. Some of the crustaceans do not even stop at cannibalism for meeting their protein require- ments. Most valuable ingredients sera has developed the inno- vative crustacean foods sera shrimps natural and sera crabs natural for the vari- ous requirements of the crustaceans. The valuable ingredients and the careful processing make these foods an ideal staple diet for crustaceans. The uni- que nutrient composition results from the sole use of aquatic organisms such as marine fish, Gammarus, Spirulina and marine algae as protein and fat suppli- ers. The proteins they contain are therefore characterized by an amino acid composition that can ideally be utilized by the crustaceans. 24