Aggressive catfish species
 

This may be of interest.

What's the most aggressive catfish species? | Features | Practical Fishkeeping

I'll place my money on the Goonch catfish.
I have caught Blue catfish and Flathead catfish in excess of 40 lbs, and they too can deliver a bite that will leave a lasting impression.:shock:
Television show.."River monster's" had an episode featuring the Goonch catfish and specimens that were easily capable of dragging down a swimmer as was reported on a couple occasions.