Crayfish are not actually fish, but are related to crabs and lobsters. They have a hard “exoskeleton”, eyes on stalks, strong mouth parts for tearing food apart, and 5 sets of legs. Their large claws are actually modified leg they they use claws to catch food.
The only native crayfish in Utah can be found in East Canyon Creek. Other types of crayfish have "invaded" waters in the west and could become a nuisance in Utah as well.
Crayfish are an important food for many sport fish. They also help keep ponds and reservoirs tidy by clipping off underwater plants with their sharp claws.
Crayfish are definitely not friendly animals. Be careful if you pick them up or you might get pinched!
Cool Fact:
Many people find crayfish delicious to eat. When boiled, the tails and parts of the heads make a tasty meal.