no tang is reefsafe!!!
here is my experience wif fishes i kept b4(either sold or in FOWLR now)...
pt:derasa nipper, only my derasa
small bt: clam nipper
bigger bt:killed a cleaner shrimp
tiny unicorn tang:jus gave it away caused it started eating my xenia
never.... i say never add a tang any how
bro nic....i suggest u remove the tang or go mushie-less gd luck