I'm sorry to hear about your Tig. One thing I had to do with mine that I originally thought would be ok is to keep him in a separate tank from my bichirs. They don't play nice together and the Tig was always getting messed up....but nothing like yours' mouth injury. Mostly from them trying to stay under the same log or something. The bichirs would flip out and fling their body all over like crazy for a minute and it would scare away the catfish resulting in cuts and scrapes, and twice his barbel broke off but grew back. He's now much happier and healthier not sharing space with them. I feed him mostly market shrimp stuffed with 3mm NLS Thera +A sinking pellets. He also eats krill, scallops and mysis shrimp. Good luck. I hope he gets well soon.
