Hello all, I'm new to the forum :]
Anyhow, my brother has had a jack dempsey for about a year now, it's about 5-6" now. A little over two weeks ago, he had fed it feeder fish. A few days later, it's stomach got very bloated, and it started laying down on it's side. We put it in it's own ten gallon for treatment. He used maracyn-two for a while, but i don't think he was consistent with the dosing. He also used melafix and epsom salt, but again, i don't know if he was keeping up with it. I told him to do daily water changes, but since he's so busy, he couldn't do it. So today I told him I would take the fish and maintain it's treatment. So I've cleaned the tank up, and did a pretty much 90 percent w/c. the fish has been sick for about two weeks, hasn't eaten, and cannot swim. It tries to swim but can't even get off the gravel. It's belly isn't swolen anymore though. I have no idea what is wrong with the fish. I took some pictures of him doing what he's been doing for about 2 weeks.
Temp: 81-83 F
Nitrate: 0-5 (Due to massive water change a few hours before testing)
Please help me figure this out! Thanks