I believe we always get only captive, farm raised Pangasids, that is culls from the farming ops. I think we are pretty sure about the species of IDS, back ear, and paroon. We might be able to tell MGC with my recent new friend Denis's help.
Concho IDK much about, almost never seen.
The big complication is the fact that there have been plenty of intra-family hybridization of the Pangasidae species.