2 literature references:

Author: Bianchi, G., K.E. Carpenter, J.-P. Roux, F.J. Molloy, D. Boyer and H.J. Boyer
Year: 1999
Title: Field guide to the living marine resources of Namibia.
Source: FAO species identification guide for fishery purposes. Rome, FAO. 265 p., 11 colour plates.
Author: Heemstra, P.C. and J.E. Randall
Year: 1986
Title: Serranidae.
Source: p. 509-537. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin.