sounds like the cons were biting his eyes causing them to be infetecd or swell up and make you think "hmm something dosnt look right" and then as time progressed in typical aggressive cichlid manner, they made theyre attack, and being greedy if they took the eye out they most likely ate it. ive had popeye on severums before and it cures itself if you do lots of water changes and make the water quality better. thats just my opinion though, we may never know as there isnt currently a CSI: Fish

