Update on the poor guy. Well his mouth has cleared up, and overall he is doing well. Nice and fat. Though he is a bit annoyed with his tankmates. While he was feeling unhealthy they did a very bad thing.
My clown barb now has no pectoral fins at all, just little stubs. So even though he swims well, he can't stop or turn very well. I blame the skunk loaches that have since been removed. I feel bad, and I know they aren't going to grow back from the damage that was done, but otherwise he seems fine, eating well, being out and social.
Evil little Fish...