I think I may have a sick red glass barb on my hands. It's almost like he has a big gas bubble; if he stops swimming, he starts floating to the surface tail-first. Thoughts?
You can try feeding him a boiled skinless pea - sometimes helps with a fish that is constipated (as in, if he is maybe constipated and holding fishy gas). Probably will not help if it is a swim bladder issue, but either way it won't hurt anything.