Okay at work we sometimes get random animals in with the feeder goldfish. Today was a crayfish. I have no idea how to take care of it and most of the caresheets I found sucked. I know I need to get an airstone. Anyone else have any tips on these? He's about 1.5" and in a plastic container with a rock in the middle. I have romaine and turtle food in there for now, I'll get some crab/shrimp food tomorrow.