I bought a 150g from someone and this little catfish came with it. The person I bought the tank from said he had no idea where the catfish came from, that he just appeared one day and that maybe his son got him out of Lake Erie and put him in the tank. I think he is a bullhead however this little fish does not match the color descriptions I have read about. This little guy is about 5 inches in length with a white belly and blackish and white colored barbs. Thanks your help!