He did not appear to have any other problems except his tail and his eye but we lost the little guy last night. I was sad he didn't make it since he had to suffer through the trauma for several days.

I was really worried it was my Arulius Barb in the tank that had done the damage. He has never harmed any of the other fish and is usually very docile. I found the real culprit though when I caught the other Rosey Barb I had purchased chasing around and trying to attack another barb in the tank. I noticed the one being chased also had similar tears in his tail as the fish that just died. I immediately removed the aggressor from the tank and everyone is living harmoniously now schooling happily like good little fishies.

The killer will be returned to the Petstore today.