Coastal Fishes of Sao Tome and Principe islands, Gulf of Guinea (Eastern Atlantic Ocean) - an update. Author Peter Wirtz Author Carlos Eduardo L. Ferreira Author Sergio R. Floeter Author Ronald Fricke Author Joao Luiz Gasparini Author Tomio Iwamoto Author Luiz Rocha Author Claudio L. S. Sampaio Author Ulrich K. Schliewen text Zootaxa 2007 1523 1 48 http://www.zoobank.org/urn:lsid:zoobank.org:pub:2202520B-A3E7-492D-A932-14463CD6DAF9 journal article z01523p001 2202520B-A3E7-492D-A932-14463CD6DAF9 Nicholsina usta (Valenciennes, 1840) UFES 160 (1 specimen) from the fish market in Sao Tome City. Encountered over a dense growth of Caulerpa sp. near Ilheu 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 Sao Tome 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.