They are currently housed in a 75, with CA cichlids. A Convict pair, a Uropthalmus, and some tinfoils that are getting too big. Its a heavily stocked tank, and there is some physical risk here, but they seem resonably well off. They also pillage my convict nest at night, a good thing. I'm working on destocking the tinfoils, currently. (it was my first big tank, so I over estimated the capacity, and under-estimated the tinfoils, at 4 inches, they are too big...)
My 55 contains only 11 Bronze Cories, a swordtail and 4 rubbernose plecos. Its a "river tank" but the cories have no trouble in the current. But, the Raphaels are from warmer waters than the intended low 70s of this tank (73-75F would be pretty good I think, once my room cools down from the summer heat).
Or, what I intended to be a SE asia biotope
. Being a 20 long I would probably be way too heavily stocked with them and the gourami slated to move in. (plus that needs loaches, not catfish!) So... 75 or 55?
