Zebra Lobster available (rare)

Crayfish are scavengers, and eat mostly vegetative matter, although they do need some protein in their diet as well. They will eat many commercial fish foods including sinking algae wafers, shrimp pellets, and many freeze dried or flake foods. It's a good idea to include a lot of fresh foods in their diet as well.

The crayfish tank will need a good filter; be sure you cycle it just like you would for a fish tank. Most North American crayfish are coldwater, so you won't need to heat the tank; however, if yours comes from a tropical environment, be sure you keep the water in the correct temperature range. 25-50% water changes should be performed weekly. Use a good dechlorinator before adding the new water to the tank. It's also a good idea to add liquid calcium to the water. This will aid in the development of the crayfish's exoskeleton, and will make the molting process go much more smoothly. I usually add 2-3 drops every other day for a 10 gallon tank.
From http://badmanstropicalfish.com/articles/article40.html

Price-$28 each available 2pcs (5-7cm length)