Yeah, these guys can be a chore to take care of. I had one about 10 years ago and he ONLY wanted to eat live shrimp and crabs. After having him for a few months he started eating frozen shrimp, but it was really tough getting him to do it. They will also kill anything you put in the tank with them. They are like little kids, they will
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with everything in your tank. Make sure you do some extra research on these fellows....