Here's the deal. You can have a really good run with any number of fish that claim to be either safe or not reef safe. In the end you're left holding the spoon of responsibility.

If what you put in there turns out not to be reef safe, well either you continue to feed it the zoas and clams or you will have to pull it out which is a pain in the fourth point of contact for sure.

It's a gamble either way. I bought my rabbit fish because it was in the section labled "reefsafe", and later watched it pick at and eat my zoas.