So I noticed this morning that one of my albino tiger barbs is missing an eye. He doesn't look ill and the socket looks perfectly fine. It doesn't look diseased or anything like that. It doesn't even appear that it bothers him any. However, this is the second albino tiger barb it has happened to. The other one I noticed months ago and he is still living and perfectly fine and just as this one, it never looked "gross" or anything like that. In the tank are 4 albino tiger barbs, 4 "normal" tiger barbs, one 4" CAE, and a pair of Paradise Fish. They are in a 20 gallon long tank that is moderately planted and has driftwood and what not. the ph is about 7, Ammonia is 0, Nitrite is 0, and Nitrate is under around 15--I'm using a liquid test kit. Anyone know what could have happened to the "missing" eye(s). This is really strange to me. Is someone sucking their eye out or what? I don't think it's a disease. My tiger barbs are going to need to learn braille before I know it!!