hermit crab:D

I have 6 hermit crabs...Interesting guys! Try www.crabstreetjournal.com for lots of info and advice

A hermit crab will want a cave, an undertank heater, and an aquarium with a top that retains humidity. A thermometer and humidity gage, both cheap. They also need a sand substrate, because they'll burrow into it when they molt. I wouldn't go with less than a five gallon tank, and even then provide some wood or some structure for them to climb on. Even though their brains are the size of the head of a pin I think they prefer the company of others - they like to stick together. It's funny to watch the pecking order when you have more than one. The "top dog" in my tank used to roll the others out of the way when he wanted to steal their spot. They really are very neat.

I just bought 5 of them this week (for saltwater, not sure what you're referring to).

As soon as I put them in, 4 of them took off. I stuck a food pellet on the side of my tank for my fish but some just sunk to the bottom. I went back to clean it up and the one hermit crab (who didn't move much) had already finished it all!