What Chris said is right, the small juvi's don't have a very good survival rate....In general a Clown Trigger is a very very hardy fish an established adult would be borderline bulletproof in a good system. I would have difficulty recommending this fish to anyone that doesn't have a huge tank and other nasty tankmates. There are people that keep them in community set ups, but again like CHris said, they are known to be peaceful for months even a year or two and then (for lack of a better description) go postal....Not many fish can withstand the onslaught of an angry Clown Trigger.