Norm, I call them perch due to my ignorance in different species I guess... I honestly have never caught or seen (around here) a different looking perch.. They have a fairly yellow underside and have blue streaks on thier faces around the gill area..I dont know what they are exactly other than they are aggresive.. Now, I guess I need to go find some shell crackers, whatever they are, I dont like parasites in my fish!!
