Cool, thanks everyone.
Just a little update. I decided I wouldn't have the time to maintain both the piranha and SA tanks, being in university now, so i gave all the fish in my 90g now, and i mean all of them, to a friend of the family that has a hugeeee (HUGEEE!!!) cichlid collection.
So I picked out 6 quarter sized RBPs from the lfs this morning, along with 2 dozen feeder guppies just incase they decided to be picky eaters. They took out 1/4 of those in the first 30min, and theyve taken bloodworms as well. Really fun little guys! I think im going to like them. My roommate threw in a chunk of honey ham and apparently they ate that too. :/
On a side note, is there a rule against feeding piranha cooked food? Like cooked fish or cooked shrimp...or cooked ham? Or does everything have to be raw