Betta91
Fish Fanatic
Well ever since I got my gourami about 4 weeks ago, I noticed that he had been acting aggressive towards the smaller one in the tank. His behavior has settled down but he has numerous scars and lesions on his skin that do not seem to be healing. I am mostly concerned with the scar that was on his fin. It keeps getting bigger and he now has a hole in his anal fin because of it. What could this be caused by and what medication do you think is best to use?