I finally let my g/f talk me into getting something other than a catfish,but the place i got him from didn't really know too much about him.he seems to be very social and eats constantly.I just want to make sure that i'm not going to have any problems with him in the future.I do know that he'll get to be a fairly descent size,but will he get aggressive once he's larger?Also,i have recently picked up a catfish that i'm not too sure what he is.He has the features of a type of Doradide but the store listed him as a "pre-historic catfish".I don't have a camera yet so i can't post pics but any ideas?