I was at my LFS and they have a fish which looks kind of like an Iridescent Shark but with much bigger eyes.... and completely black..... stomach and all no lighter color what so ever. Any ideas? Could it be just a black iridescent or is there another species in that family that can have that coloration? Looked on planet catfish and didn't see one exactly like it. If I go back and buy it today I'll post pics later.