They're great! They need lots of rock to hide in. They're a bit of a threat to shrimp and crabs. They don't see very well, they just use their sense of smells to find food. Make sure the one at your LFS is eating before you get it. Ask them to feed it, and if it doesn't feed the first time, ask them to put it on hold for you until it will eat. (If you're lucky enough to have a LFS as cool as this) Mine took to krill with no problem, but I know that this isn't the case with some eels. (You really don't want to be buying live feeders for an eel that eats this much lol)