Crayfish 

There is a species that is blue called a Blue Crayfish. There are also red and white crayfish. The red crayfish is the most common, the blue is the second most common, and the white crayfish is the least common.

There is a cave of species of Crawfish that are colorless and have no eyes.

There are no crawfish in Africa and Antartica. 

Crayfish are cousins of the lobster. 

There is a crayfish called the dwarf crayfish. It is a very small crayfish.

The eyes of a crayfish are wonderful, they can move them independently. 

Crayfish can eat hot dogs and cat food.