We were "Gifted" a crayfish. My 5 year old son wanted one for our 55g tank. We have 2 mollies and 1 guppy in there. And now the crayfish. Although this is a wonderful surprise for him and he's so excited, I must admit, I'm out of my element here. What does this fella even eat? I read that I should get him some type of pipe to hide in, what do you recommend? I don't want to stick a plain white PVC pipe in there. That would be ugly. Basically just give me the run down on crayfish! Thanks yall! You've been so helpful with everything!