Okay, in full lighting I see that there is little to be concerned about at this point in time. The idiot is getting his antennae stuck in a crevice and damaging them that way. His skin is fine, I think it was the flashlight playing tricks on me. And he doesn't look to be starving, just flat-bellied. I will set up a tank just for him if anyone knows the correct parameters for this unknown fish. Not sure why I'm even hoping for an answer, but I do wish that other large pim keepers would offer some suggestions for do's and don'ts for similar species.