Desjardini Tang eating zoas

[sbbk]

My Desjardini Tang has been in the tank about 6 months and just started nibbling at and eating zoas. The fish is about 6" long, tank is a 48" wide 120 gallon. Other fish: foxface, bristletooth tang, hippo tang, purple tang, pajama cardinal, flame hawkfish, 3 azure damselfish, maroon clown. There is no aggression but I think the fish will be removed in a week or two if the damage continues as expected. I'm thinking of adding a 3-4" female bellus angel plus another small fish, maybe a second genicanthus angel. Any recommendations? I'll miss the tang which is the best algae eater ever, including eating bubble algae.

 

[threebuoys]

My sailfin consumes Kenya trees and pulsing xenia like there's no tomorrow. Fortunately, he does not eat my zoas. I had a bi-color angel for a while, he was definitely not reef safe. Had to remove him.