I have kept a Gulper catfish for a couple months now in my 75 gallon tank. He’s alone in the tank, and the tank was cycled previously (all the parameters are well within acceptable range). When I got him, he was in very bad shape. He was malnourished, pale, breathing rapidly and developed ich within days of receiving him. Over the course of the first month, I was successfully able to treat the ich, get him to eat, and restore his coloration. However, I’ve been unable to fix his rapid breathing. It’s very labored, and his gill palpatations are very extreme. He often swims against the direct outflow of the filter. The dissolved oxygen in the tank should be fine, as I’ve allowed for plenty of water agitation at the surface and even added a large air stone. There isn’t a large bloom in the tank that could be sucking out the oxygen. Despite 40% weekly water changes, I’ve checked for ammonia twice and the results are fine. I’ve read online about gill flukes, mites, and baterial/fungal infections, but I have very little experience with treating gill issues. He isn’t really displaying any other symptoms. I was wondering if anybody has a hunch as to what may be wrong, or additional things I should be looking for. I’d hate for the fish to die after all the progress I’ve made towards restoring him back to health.
Thanks
Thanks