Stay away from damsels if that's the case. Oh, I have mixed opinion about the blue hippo tang. Some say they are pretty hardy but others say they need prestine water conditions. I guess it depends on whether the LFS
associate is eager to sell you the fish or really concerned of the fish's welfare.
Blue Hippos are great. they play dead a lot of times, they swim in a funny way, and they have such a personality. But they are expensive. I bought mine for $39.99 and it's about 2" big. It was attacked and killed by yellow tail damsels.
I stayed with triggers and puffers instead.