A boarfish genus with two species, both found in Australia. Species have the following charactersitics; body moderately deep; snout becoming elongate and deep with age, dorsal profile concave; lips, skin of chin and lower jaw highly convoluted; teeth of both jaws in broad bands anteriorly, outer teeth small and conical, innermost enlarged and bulbous; vomer without teeth; nape in juveniles steep, adults with curved bony keel; scales absent from opercles and dorsally on head; soft dorsal fin rays not produced; anal fin with short base, margin mostly straight; caudal fin emarginate; pectoral-fin base in advance of ventral-fin base.
Bleeker, P. 1876. Systema Percarum revisum Pars I et II. Archives Néerlandaises des Sciences Naturelles 11: 247-340  [nom. nov. for Richardsonia Castelnau, 1872].
Castelnau, F.L. de 1872. Contribution to the ichthyology of Australia. 1. The Melbourne fish market. Proceedings of the Zoological and Acclimatisation Society of Victoria 1: 29-242 1 pl  [a junior homonym of Richardsonia Steindachner, 1866 (Pisces, Retropinnidae)].
Gomon, M.F. 2008. Family Pentacerotidae (pp. 611–617). In Gomon, M.F., Bray,D. & Kuiter, R.H. The Fishes of Australia’s Southern Coast. New Holland Publishers, Chatswood, Australia.
Hardy, G.S. 1983. A revision of the fishes of the family Pentacerotidae (Perciformes). New Zealand Journal of Zoology 10: 177-220 figs 1-13
Kim, S-Y. 2012. Phylogenetic Systematics of the Family Pentacerotidae (Actinopterygii: Order Perciformes). Zootaxa 3366: 1–111.