chrisdef15;683755; said:Since it feeder fish i think you want it to rip apart then an undulate trigger is probably something to look at. Niger triggers are also pretty cool especially with there small mouths they do alot of ripping. Both will bash things against the rocks to help break things up. Some wrasses will do the same. Tuskfish have cool teeth and will eat small feeders and also tear them up abit. Groupers have really cool teeth but eat alot quicker.
Just be aware except for the grouper they will all eat most things you put in there to help clean the tank to like hermit crabs and snails.