What kind of tank mates did you want to keep with it? Pretty sure you can keep pretty much anything provided it's not small enough to become food. I've had mine for about 2 years now, quite timid and polite during feeding and has never shown aggression towards other fish. I currently have it with a seahorse, an engineer goby and two filefish, one being a matted filefish with isn't that big but big enough so the lion doesn't see it as food. I've also had it with a green spotted mandarin since June which is definitely small enough to be eaten but I think the colors deter the lion, not sure though but so far so good
Oh and the seahorse often catches rides on the lion, pretty fun to watch and it sure freaks people out
