[Little Luey]

I'll admit that two crabs figthing is fun to watch, but just like Cougra said, they really do not clean the tank for me, so why have a ton of them, in a small tank like a 20gal I have to be carefull how the tank is stocked, if I have to many snails/crabs it will limit the amount of fish I can have, I only have 2 as it is. And my tank is relatibly algie free (knock on wood) , and I feed very lightly so it could not support the regular crews the LFS sell.