nigrescens, Labrus Bloch [M. E.] & Schneider [J. G.] (ex Seba) 1801:263 [M. E. Blochii, Systema Ichthyologiae; ref. 471] No locality [probably Ambon, Maluku, Indonesia]. No types known. Based on the "Labrus tetraodon, nigrescens, maculis albis undique varius" of Seba 1759:94, Pl. 31 (fig. 2) [ref. 18716]. •Regarded as unidentifiable -- (Randall 1995:278 [ref. 22896], Randall & Victor 2022:202 [ref. 39916]). •Valid as Hemiulis nigrescens (Bloch & Schneider 1801) -- (Kuiter 2010:266 [ref. 35285], Near et al. 2025:310 [ref. 42466]). •Valid as Halichoeres nigrescens (Bloch & Schneider 1801) -- (Allen & Swainston 1988:116 [ref. 25477], Randall et al. 1997:520 [ref. 25919], Parenti & Randall 2000:22 [ref. 24943], Westneat in Randall & Lim 2000:628 [ref. 25122], Hutchins 2001:268 [ref. 25841], Hutchins 2001:39 [ref. 25847], Sadovy & Cornish 2000:207 [ref. 25480], Allen 2000:113 [ref. 25868], Allen & Adrim 2003:49 [ref. 26830], Manilo & Bogorodsky 2003:S115 [ref. 27377], Barber & Bellwood 2005:249 [ref. 35318], Allen et al. 2006:1393 [ref. 29095], Satapoomin 2009:225 [ref. 30463], Randall & Allen 2010:286 [ref. 30980], Allen & Erdmann 2012:679 [ref. 31980], Fricke et al. 2013:266 [ref. 32706], Larson et al. 2013:166 [ref. 32988], Fricke et al. 2014:132 [ref. 33932], Psomadakis et al. 2015:299 [ref. 34104], Fricke et al. 2018:284 [ref. 35805], Satapoomin in Kimura et al. 2018:232 [ref. 36460], Eagderi et al. 2019:72 [ref. 37020], Koeda in Koeda & Ho 2019:1023 [ref. 42393], Zajonz et al. 2019:89 [ref. 36871], Allen & Erdmann 2024:743 [ref. 40796]). Current status: Valid as Halichoeres nigrescens (Bloch & Schneider 1801). Labridae: Julidinae. Distribution: Western Pacific: central Indonesia east to Philippines, north to Taiwan, south to northern Australia. IUCN (2010): Least Concern. Habitat: marine.