Yeah its those little mini kois's we use to feed those bigger fish like arowanas and oscars. I wanted to know its name so that I could google it. Apparent its know as Carassius auratus aka common goldfish. I bought some to feed my Oscars and kept them in my quarantine tank to make sure they were disease free before I fed them to my Oscars. But they looked so good and playful in the quarantine tank that I decided keep them rather than use them as fish food.