Is there any species of catfish out there that has teeth like a goonch? But is much smaller than a goonch.
Various sheetfish (Siluridae) have impressive teeth. Belodontichthys is a genus you should probably look up. They look like the bastard child of a payara, arowana and a goonch and are dynamic, active predators. On top of all that, a normal specimen won't get much over 2'. They don't really look like your traditional catfish though.
Catfish with teeth are rare, however. Short of the sheetfish and Bagarius, there's not many options for catfish that have teeth.