Yep brazil I think need to do a planet catfish search on him really , I dint think these get too big around 8/10" mark I've been told , I've got a black driftwood cat that's maxed out at around 12" and very chunky but the regular driftwoods mouths are much smaller in scale to the blacks
...Looks like Trachelopterus galeatus. There are also other representatives in this genus which it could also be, though galeatus is the most commonly available.