ok so i just got this guy. It's about 4 - 5 inches. the guy had it listed as a white piranha. honestly i dont know enough yet to know what it is but i paid $50 for it and about $200 worth of stuff including 30 gal tank, powerheads, filter, heater, etc so i bought a 60 gal filter and got the fish and a bunch of other stuff free. I'm just wanting to know what it is. He had about 20 goldfish with it that i took out so im curious how to get him off of goldfish since it is refusing other foods. Thanks

