Generally, all dwarf angels can be hit or miss in terms of their reef compatibility, but I've had good luck with potter's and brazillian flameback angels. I think flame angels tend to be more problematic, but that comes from only a few people I have talked to/posted on this board before. Just out of curiousity, are you planning to put it in a 29 gallon tank? I would probably avoid that, since they spend a lot of time picking at live rock, and may not get enough to eat, even if you feed your fish.