Pepps are pretty durn aggressive and can become a problem. I had a bunch I caught at the coast and they would dig the food out of my RBTA's stomach. If I fed the tank mysis the BTA would end up with some or the clowns would feed it or I would feed it a little piece of shrimp and I would guard the dang thing for 20 minutes, didn't matter how long as soon as I left my guard they'd attack it and dig the food out from the gut. I realize these are a slightly different variety than the others but dang! They did take care of the aptasia problem though that's for sure.