Exactly, I don't know for certain what the heck it was. Coulda been a mutant fish for all I know. I just know it was in the 4-5lbs range, very dark black with white highlights. If it was a crappie it was a monster. It for sure wasn't a catfish, carp, bass, pickerel, or gar.
I didn't snag it either, it hit once and then hit again...two distinct thumps then the fight was on. I shouldn't have hossed it but I was so excited just to catch a fish on this windy cold day that I was hurrying to get him up to the surface just to see what it was.