Nicholsina usta (Valenciennes, 1840)

Peter Wirtz, Carlos Eduardo L. Ferreira, Sergio R. Floeter, Ronald Fricke, Joao Luiz Gasparini, Tomio Iwamoto, Luiz Rocha, Claudio L. S. Sampaio & Ulrich K. Schliewen, 2007, Coastal Fishes of Sao Tome and Principe islands, Gulf of Guinea (Eastern Atlantic Ocean) - an update., Zootaxa 1523, pp. 1-48 : 15

Nicholsina usta (Valenciennes, 1840)

UFES 160 (1 specimen) from the fish market in São Tomé City. Encountered over a dense growth of Caulerpa sp. near Ilhéu das Cabras in about 10 m depth (SMNS 25233, 1 specimen). The eastern Atlantic Nicholsina usta are generally considered to form the subspecies N. usta collettei Schultz, 1968 . Two animals from São Tomé analysed by Robertson et al. (2006) were genetically distinct from four western Atlantic animals to such a degree that the authors suggested the recognition of the two subspecies as valid species.