Thanks for the advice - any one else have any experience with these fish in a reef tank. In addition, are they particularly aggressive (again, I have read conflicting opinions...)? I would like to keep it with 2 ocellaris clowns, 2 Bangaii Cardinals, 1 Fridmani Psuedochromis, and either 3 neon gobies or 3 blue/green chromis....is this likely to cause problems??