My red tail catfish has little holes all over his belly by the fin areas and the fin joints are bloody. What is happening to him? It is about 12" in a 150g, temp is 78, ammonia and nitrites are at 0 and nitrates are less than <10ppm. I do weekly, sometimes two weekly water changes of 25-50% and I haven't added any new fish or ornaments or anything. What seems to be happening to my catfish?
This is the best I can get with my phone cuz he keeps moving.
This is the best I can get with my phone cuz he keeps moving.
