Coastal Fishes of Sao Tome and Principe islands, Gulf of Guinea (Eastern Atlantic Ocean) - an update. 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 Zootaxa 2007 1523 1 48 6N24H Bath, 1994 Bath 1994 Actinopterygii Blenniidae Hypleurochilus Animalia Perciformes Chordata species pseudoaequipinnis  SMNS 24224 (1 specimen, Bom Bom Islet) and SMNS 24131 (1 specimen, Bom Bom Islet). UFES 141 (1 specimen, Santana Islet). Afonso et al. (1999) recorded this species as Hypleurochilus aequipinnis Guenther, 1861, based on an underwater observation by PW. H. aequipinnisand H. pseudoaequipinnisare sister species in the eastern and the western Atlantic, respectively. Surprisingly, the three SMNS and UFES specimens from Sao Tomeand Principecorrespond to the western Atlantic pseudoaequipinnisand not the eastern Atlantic  aequipinnisin the shape of the supraorbital tentacles and the colour of the head, as described by Bath (1994). Comparative material: H. aequipinnis: SMNS 16660, Senegal; H. pseudaequipinnis: SMNS 19384, Netherlands Antilles.