BSchiller

I have a 55 gallon with 5 geophagus tapajos, ~20 silver tip tetras, 2 otos and 2 small Bristlenose nose plecos. (I am planning to re-home a couple Geo's once I can sex them) Today I saw this guy.. has a mark on his side, and looks like the front of his face is missing. I see the tetras chasing each other often, but I've never seen the geophagus even acknowledge the tetras. Could this be from another tetra, or more likely from a geo?