I noticed a local fish store near me seemed to have what looked like a couple of dwarf red tail catfish about 3 inches long. they also had a separate set of red tail catfish of the same size in a tank nearby which def looked to have longer bodies. I've read about the dwarf/shortbodied red tail catfish before, but was wondering what were the tell tale signs that one is actually a short body fish, vs a juvenile version of the regular fish? no gap between the dorsal fin, middle fin, and tailfin? Hopefully someone can offer some valid information, as i am looking for a very personable/interactive catfish and know i wont have the space for a regular red tail cat.