Feral habits die hard.
I remember a similar situation with 2 baby (1 inch long) Yellow bullhead my daughter and I found and wrongly identified as tadpole madtoms (Noturus gyrinus which do not grow more than an inch or two) along with some yellow perch (Perca flavescens) fry.
It's the strong that tend to live long... The bullheads, even at that tiny age, proved to be able nocturnal predators who sneak up on sleeping fish and eventually the larger ate the smaller.
Andrew Cribb
I remember a similar situation with 2 baby (1 inch long) Yellow bullhead my daughter and I found and wrongly identified as tadpole madtoms (Noturus gyrinus which do not grow more than an inch or two) along with some yellow perch (Perca flavescens) fry.
It's the strong that tend to live long... The bullheads, even at that tiny age, proved to be able nocturnal predators who sneak up on sleeping fish and eventually the larger ate the smaller.
Andrew Cribb