No, not solo. Gonna shoot for a few tank mates and see how it goes. So far in six months he hasn't shown any aggression ever to any fish other than his female--I recently rehomed her. He's housed with 4 freddies 3-6" and a lone cutteri male 5" at the moment in a 125. Only aggression in the tank is between the largest Freddy and the cutteri, but they've mellowed out lately.
I have a 60x18x18" sump under the 225 to house any fish that might have an issue and plenty of places to re-home anything that doesn't work.
