Crayfish, also known as crawdads or crawfish, belong to the phylum Arthropoda and the subphylum Crustacea. Like other members of their phylum, crayfish have external skeletons made of chitin, a circulatory system that lacks dedicated blood vessels and a simplified nervous system similar to that found in worms.
Crustaceans are distinguished from other members of their phylum by their adaptations for life in water. Other arthropods, such as insects, have book lungs or tracheae; but crustaceans, including crayfish, have gills. Crayfish resemble small lobsters, and both crayfish and lobsters belong to Decapoda, a group within Arthropoda that consists of animals with five legs and 20 body segments.Learn More
Crawdads, or crayfish, feed on small fish that can be captured with their claws, other invertebrates and plants, both living and dead. Those are that are kept in freshwater aquariums will eat regular and tropical fish food, shrimp pellets and various vegetables. Crayfish represent an important link in the food chain and are a food source for fish, such as bass, and water birds, such as herons.Full Answer >
Fresh water crawdads are considered omnivores, which means that they eat both animals and plants. They are opportunistic creatures and eat whatever happens to float by.Full Answer >
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 with their claws, propel themselves backwards and use their tails to throw mud at their enemies.Full Answer >
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.Full Answer >