Alright I needed to identify a fish, but I couldn't upload pics so I tried to figure it out myself and now I am almost positive it is a red- tail tinfoil barb. This fish belongs to someone I know and she has been having problems lately. She kept it with a platy but the platy died one day and the barb ate it. I guess it polluted the water or something because after she had bad water conditions. Anyways not to sure of the whole story, but its her kids fish so she replaced it so she wouldn't find out and now the replacement has died. She wants to put in a new fish but not until the problem is solved. I know she doesn't do enough water changes so I told her to do more, but I thought barbs were aggressive? And apparently this gets to be a big fish. It lives in a ten gallon, and has for over a year or so. And apparently hasn't grown much lately. Any help would be great thanks. I will try to post a picture if I can figure it out.