Naso Tang??

[Jason McK]

Quote form Pet Solutions.com "Mertensii Butterflyfish, Chaetodon mertensii, is often found living on or around the reefs of the Pacific Ocean. Members of the genus Chaetodon make gorgeous inhabitants of fish only aquariums. Soft Corals and most Invertebrates should do fine with the Butterflyfish, but it may likely decimate Stony Corals, as they are a part of its natural diet."

This Butterfly feeds almost exclusivly on SPS.

Were are you getting your fish list from? you seem to be picking fish you can't possibly have success with