that is definatly a tin foil barb....and yes he is very beaten up. i am an aquarium tech by trade and i do see alot of severums with tin foils....but the tanks are always a suitable size. being in a pet store, i bet the 2 shared a 10 gallon tank. that poor barb....but given a good safe home.....I am sure he will bounce right back and become a beautiful fish....