I wanted to know the Compatibility of them, He is on his own, I know they are predatory catfish, but I wanted to know if I could keep them with other predatory catfish, I can get my hands on another Trachy, same size, aswell as similar sized Liosomodoras oncinus, would these make good tank mates? Tank size, I have 2ft'ers to 6ft as I recently set up a fish house.
Heres he is anyway:


PS, their is bloodworm etc in the bucket as in the LFS, he looked a bit skinny so I asked to see him feed, he fed well so I took him and resulting in the stress of bagging and moving he throw up the blood worms. He now is eating, tetra prima, earthworm pellets and earthworms, I am going to add more to his diet, more meaty live foods, like crickets maybe?
Regards
Dave