RTB's can get pretty big and they get more aggressive as they grow. Both the angels and apisto's are on the more peaceful side of things. In general I would say the RTB would need to be rehomed at some point.
Keep the Red Tailed Shark instead of having the Apistos then
Or this. As fluttermoth suggested but be wary of the RTB as he gets bigger.
i think i might see how they get along.
i noticed most it really never nips, mostly chases and if the apistos are peaceful maybe he'll be alright.
if not i put him with my barbs though that would be temporary cuz he's already to big for 30gal.
but last one i had with barbs become friendly with them. maybe same could be for him?
i don't know if that's normal though
