I've never personally kept them but the tank sounds like its proper size for the size of the fish, then it most likely is just a SB, nice pickup!!maybe i guess, although they were suppossedly fed king prawns and in a 6x2x2 i guess water quality coulda been an issue...
+1 this should be intresting as i wanna see how big this guy gets compared to a normal rtc!It's definitely a short bodied cat, not necessarily stunted in any ways.