I'm getting conflicting opinions. I've been told it could be Iheringichthys sp.(1), the Luciopimelodus pati, Pimelodus albicans (hard to tell from the pic), Pim. Clarias, and Pinirampus pirinampu. Or possibly a species of Bagrid. I've looked through planetcatfish and I haven't found anything that looks exactly like it.. a few close ones..
It's currently about 7 inches. I bought it when it was about an inch and a half.. And I've had it about a year.

Excuse my ugly gravel. LOL!
The pic was taken November 21 2002