Update: So much better. Thank you ALL!! Bloat resolved itself and hasn't returned. He's swimming normal and eats the New Life pellets. He only had about 4 days of aq salt treatment.
His fins seem to have healthy edges now & he's much more apt to spread them out. The fins were severely damaged when I got him - a big reason I rescued him. He is a crown tail. Or at least he was sold as a CT. I'm wondering. A ragged edge doesn't mean CT. Maybe his fins are just that damaged. But the only thing that matters is that he seems to be happy and healthier each day.
Pictures aren't great, one shows his dorsal fin (makes me hurt every time I see it) and the other shows his tail & anal fin better.