The finger test...
A good way to tell how aggresive a fish really is! "FINGER! EAT THE FINGER!"
(Tue 16 May 2006 11:29:05 PM PDT)
They were just the type to gravitate towards anything that might potentially result in food appearing in the tank. It was so cute, they'd even race across the tank if somebody walked by. They grew out of it as they got older though. =(