Yellow Tang Going Crazy?

[sacramonel]

Today I noticed my Yellow Tang picking at my button polyps. I know this shouldn't be normal behavior. Anyone have an idea why this is happening?

 

[Chac]

U sure he aint just picking at algae

 

[sacramonel]

Hi - Sorry my reply took so long (computer issues). It seems the Tang had been eating the algae, but he destroyed the polyp colony. I don't understand why because I feed it sea veggies daily.