Are they not illegal where you are?
Onto the others i've got: I've had a harmless nip off my aro at feeding time when he mistook my fingers for the piece of fish i was holding for him, other than that he normally goes and hides if i get in the pool to do maintenance.
Red Tailed Catfish i'd treat the same as i do all my other big pims when i go paddling, be aware they're there! If it's big enough to fit in it's mouth and it tastes nice then it could get swallowed. There are reports of really big pims like piraiba swallowing people, so a huge rtc at 5 feet you'd need to keep an eye on. They don't have teeth to worry about, but i hand feed some of mine and you can feel the huge suck from there mouth when they take food from your hands and their mouth isn't somewhere i want my fingers to go! When paddling they do pay an interest in toes but so far none have tried to eat them
Pacu would be a worry, they have strong teeth and will eat pretty much anything. I've seen pictures on here of a guys finger after his pacu bit him while doing some tank maintenance. Not pretty. And they're the boys i keep my eye on the most when i do work in mine.
Cichlids have a good bite on them too if they're not happy with you, think how many guys and girls on here describe their glass bangers. They'd happily take a bite at their owners if they could and i'd imagine something like a dovii's teeth sinking in would not be pleasant (luckily mines a big wuss) but even Oscars can draw blood.