Hello all, I am so confused as to what’s wrong with my betta and SO worried. My brother rescued him from one of his frat friends who had him living in his own waste but then had to move to california, leaving his little sister (me) with the betta, Sinicci. He has had fin rot since the day we got him so I’ve obviously been doing frequent water changes (25%) since six months ago when he was first handed to me. I’m almost completely sure he came with the gill hypersplasia but I can’t seem to get either of these problems to go away. He is in a 3 gallon filtered tank (he used to be in a 10 gallon but I moved him in order to treat him properly). The water changes seemed to keep the fin rot at bay but as of lately it’s started to progress, twisting his beautiful fins together like coiled wire. I have treated him on and off with bettafix and melafix (with very mild dosages, I knew the danger of it) and 25% water changes every day. From everything I have read online, I know that clean water is the best treatment above all else, but he has the cleanest of clean water and whenever I give his little body a break between treatments, the fin rot progresses. I just treated him with aquarium salt for the first time (I’ve been avoiding it because I know that it can burn them and I didn’t want to do anything that put him in pain) but I am so worried and at a loss of what to do. I used a decent amount below the recommended dosage because I want to do everything slowly to acclimate him to his tank conditions and keep his stress level as low as possible. I have two other bettas that I rescued when their bodily conditions were MUCH worse than Sinicci’s and they’ve both bounced back beautifully. He still has a rampant appetite and is very active and always happy to see me, but every once in a while I’ll notice very very mild lethargy in him. Also, his color seems to be fading and he looks slightly grey to me. It may be in my head, but I just want to address it before his lethargy becomes obvious and his condition is irreversible. Is this not fin rot? What can I do about his gills? I feel like a terrible fish owner, please help I love him!!