So I'm picking up a 75 gallon on Friday, and it has three fish in it - an albino rainbow shark, a bala shark, and some sort of catfish. I could hardly even get a look at it as it was inside a rock structure, but I have a terrible description (sorry!) - it was probably about 6-7" long, was primarily brown or grey (was hard to tell), had maybe inch long barbels (no more than one or two on each side of the mouth), and the most distinct part was that it had a solid yellow line that ran laterally, just above the center of the fish, and extended almost all the way to the tail. That ring a bell for anyone?