tangs
tangs
I have 2 yellows (4 years),1 sailfin(4 years),and 1 clown tang(6 years) in a 180g.
The yellows got bigger than I thought and are a lot more aggressive than I thought.The more dominant yellow tries to intimidate all the other tangs including the clown(though not too successfully).The yellows, now that they are grown(got them as small as possible) ,also appear to need more room.They cover a lot of ground grazing.Aggression in my tank is limited ,I believe, because it is two sided (room divider) and there are only 7 fish in the tank (2 maroon clowns and an Alens damsel.It is also overgrown with corals...so lots of places to shelter/hide.
I wonder if you have enough room for what you would like to do.