It is HIGHLY frowned upon to put crayfish in the same aquarium with ANYTHING, they kill just about everything, fish, frogs, shrimp, snails, clams and even other crayfish. At first they may not fight but in the end one or the other will kill the other.
Some times you can get crayfish to live together in one aquarium but it needs to be about 15 gallons per crayfish, and some times that isn't enough. But if you put some thing in an aquarium with a crayfish expect it to be killed and/or eaten or vice versa
Some times you can get crayfish to live together in one aquarium but it needs to be about 15 gallons per crayfish, and some times that isn't enough. But if you put some thing in an aquarium with a crayfish expect it to be killed and/or eaten or vice versa