my sixline wiped out my pod population in like 2 days. hes very bold and him and my purple pseudo fought for about 2 days, but now there fine. he will most likely get aggressive towards any new tank mates, so you may want to add him last. they eat pretty much anything you throw in the tank food wise, and mine has never touched any of my corals, i have sps, clams,lps, and softies.