Having kept several dwarf angels, my opinion is that a 29 is really pushing it, and is simply too small. These can be active fish once settled and will use every bit of available space. If you plan to have other fish in there, I think the angel would be cramped, and you could even see some pushiness. While coral beauties are among the more tolerant of centropyges, they have that angel attitude and don't like to be crowded. I'd stick with smaller, less active fish that don't need a lot of space. Another consideration would be a cherub angel (c. argi). Stays a bit smaller but can be a terror with smaller fish. If you only have a couple small fish, and a lot of LR for territory, adding this species last might work.
