Those large bumblebee catfish like the one in the photo are extremely predatory, as i found out to my cost some years back !
Petricola x 5 really, they're supposedly better in higher Ph 8 - 8.5 but they're a nice fish.
Jaguar Catfish are really, really cool but you won't see much of him. They're not as difficult as made out to be though, they tolerate a wide Ph, about 4.5 - 7, more acidic being better but as long as you keep plenty of wood in the tank and nothing that it can fight with they're not too bad. They're not armoured like a lot of catfish so you need to make sure they don't get into trouble in that way. Feed things like prawns, lance fish and carnivore catfish pellets.