I had two pleco, one was a clown pleco, the other a royal tiger pleco. They were both rather small, I know they are both meat eating dwarf species. Rencently the royal tiger pleco was heading into the territory of the clown pleco and they started to fight. Then I noticed the tiger pleco wasn't around anymore for a few day. He was bold and didn't really hide much so it was unusual. I looked under his driftwood and he was dead!!! Kind of decomposed. Could it be that the clown pleco killed him? If not, I don't know what the heck is going on because also one of my tetras showed up with an eye missing a couple of days ago.