Currently I have 5 Red Devils living together and they've been together for a year, every so often I add a new red devil and for some reason they don't show and aggression towards eachother but if I put any other type of fish in the tank they kill it instantly, every so often I add a new red devil to the colony.... Most people say red devils live alone, but I have a weird group of RD's... I have 1 Huge male who runs the tank and the other 4 just hang out, they are all "Friends" and all seem to "hang out" with eachother...
The reason for my long post was I was trying to make a point that adding a new red devil to the tank again probably won't cause any harm, even if you red devil is aggressive it will be put in its place, or it will put my red devils in their place... Red Devils can live in peace!! It is proven~!
