What is wrong with my albino tiger barb?

So far i have had this albino tiger barb for about 3/4 of a year in my tank and it seems that the fish has some sort of an internal bleeding that can be seen through its skin. I have been observing it all the time and it seems to go on with life as if it were nothing. The internal flooding that is happening can be described as: a brownish reddish flooding all around the stomach area, and some reddish flooding above it. The backside though seems to have no problems whatsoever. Although this seems like a lot, it has healthy fins and nothing wrong with eyes. I also keep the water quality very clean. Also, when i got it, i was hoping i would be able to heal it because i pitied the fish. ALSO, this sickness has not occurred for the rest of the perfectly health fish. BTW, that fish is the ONLY one with this problem.