Crayfish are omnivores, mainly eat plants, small fish, shrimp, plankton, benthic organisms, algae and so on. Crayfish hatchlings to its own survival of the yolk for nutrition, soon after the ingestion of rotifers and other small zooplankton, as individuals continue to grow, ingesting larger zooplankton, benthic animals and plant debris, adult shrimp both plants and animals, the main plant debris, animal carcasses, but also ingested water earthworms, mosquito larvae, small crustaceans and some aquatic insects.

Crayfish are crustaceans, decapods, crayfish aquatic animals. Also known as crayfish, red crayfish and freshwater crayfish. Shrimp-like and hard shell. Adults are about 5.6-11.9 centimeters long, dark red, with a nearly black carapace, and a wedge-shaped stripe on the back of the abdomen.

The wild crayfish grows up by eating algae underwater, and it usually lives underwater, eating plant roots or leaves from underwater plants to sustain its life, in addition to eating small fish that have died, and insects on the surface of the water. When there is not enough to eat, they will kill each other and eat their own kind.

Cultured crayfish mainly eat shrimp feed grown up, and their living environment is relatively good, there will be no don't pollute the phenomenon, they mainly eat water plants and feed, so the meat is also more tender.

If the home as an ornamental pet small amount of feeding crayfish, you can buy some sinking type of fish food, turtle food can be fed. But feed enough, and change the water often to keep it clean.