Crayfish molt because they must shed their hard exoskeletons and grow new, larger ones as their size increases. During the first year of life, a crayfish molts six to 10 times. This number decreases to three to five time... More »

Crayfish are naturally herbivores, and therefore their favorite food is vegetables, especially aquatic vegetables. They are opportunistic omnivores, and so they will eat practically anything given to them. More »

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Crayfish swimmerets are appendages on the ventral side of the crawfish's abdomen. The pair that is closest to the abdomen shows the sex of the crayfish. More »

Crayfish use their gills to breathe. A crayfish has a gill at the base of each leg. These gills are very delicate and are covered by the crayfish's carapace, or shield. This carapace is aligned backwards from the head, a... More »

Crayfish, which are freshwater crustaceans closely related to lobsters, have large claws with which they threaten predators and protect themselves. In addition, when crayfish are frightened, they make menacing gestures w... More »

As omnivores, Crayfish like to eat shell fish, worms, plants, insects, plankton, insects and snails. Crayfish are not picky and will even eat dead fish, decaying plants and dead animals. They will eat anything within the... More »

Crayfish have a two-part stomach, with each stomach breaking apart food in a different manner. They also possess a digestive gland, sometimes called a liver, and an intestine that finishes the digestive process and excre... More »