Regals mostly safe
Regals mostly safe
Coming in late to the discussion, but I saw Matt mention my Regal Angel, so I thought I'd chime in with my experience...
My Regal has (so far, about 1 year) been totally reef safe in my tank - never nips at anything I have, which includes SPS, LPS, and a couple types of softies (xenia, and a nice Ricordia from Dave A.).
However, a couple relevant disclaimers: For one, I know in the Regal Angel Thread over in the reef fish forum, several people have mentioned that they've been able to get their Regals to start feeding by offering zoas. Apparently some Regals love them I don't have any in my tank, so not an issue for me, but Mel might have a problem with that... I believe they also have a repuation for eating sponges.
The other thing about Regals is that they are supposed to be really touchy. It's one of a handful of species rated on liveaquaria as "Expert Only" in difficulty level. The general problem seems to be that they are tough to get feeding. In the wild they are used to picking their food off rocks, not taking it directly out of the water column the way most of us feed our fish. In my Regal's case, it took a couple weeks to get her to start eating the food I offered regularly, but my tank has a whole lot of Florida live rock with lots of pods and other goodies. I'm pretty sure the LR was what kept my Regal going while I was training her to eat prepared foods - I could see her picking at it. Now she'll vigorously eat just about anything - flake, pellet, frozen, you name it. But if you read the aforementioned thread, you get the strong impression that my experience is unusual - they usually never really start eating and are dead in three weeks. There have also been some posts about Regals suddenly croaking after many months in tanks, and the suspicion is that there's some critical element missing from their captive diets. I try to vary my tank's diet with several different foods to (hopefully) combat this possibility. So far so good, but I'm going to wait at least a couple years with this fish before I feel like I've been truly successful.
I'd be happy to provide more tips based on my experience with my Regal if someone else decides to try one. I'm guessing for Mel the potential danger to zoas will be a show-stopper. There's a real nice-looking Genicanthus caudovittatus (Red Sea Male Zebra Lyretail Angelfish) being offered in the Divers Den section of LiveAquaria right now that might make a nice alternative. I don't have any experience with this species, but I believe the Genicanthus generally have a reputation for being reef safe (but research more before buying!).
Jeff (vol_reefer)