bahianus, Acanthurus Castelnau [F. L.] 1855:24, Pl. 11 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Bahia, Brazil. Holotype (unique): MNHN A-7078. Type catalog: Bauchot & Randall 1996:56 [ref. 22195]. •Valid as Acanthurus bahianus Castelnau 1855 -- (Randall 1956:225 [ref. 12221], Robins & Ray 1986:256 [ref. 23100], Edwards & Glass 1987:664 [ref. 9166], Desoutter 1990:962 [ref. 18967], Cervigón 1992:251 [ref. 23827], Cervigón 1994:213 [ref. 24488], Aguilera 1998:52 [ref. 24221], Smith-Vaniz et al. 1999:321 [ref. 25013], Schmitter-Soto et al. 2000:168 [ref. 27754], Gasparini & Floeter 2001:1646 [ref. 25634], Rocha & Rosa 2001:992 [ref. 25909], Kuiter & Debelius 2001:65 [ref. 26232], Rocha et al. 2002:244 [ref. 25914], Smith-Vaniz et al. 2002:104 [ref. 26570], Collette et al. 2003:124 [ref. 26784], Randall 2003:1803 [ref. 27098], Moura & Menezes in Menezes et al. 2003:100 [ref. 27192], Smith et al. 2003:66 [ref. 27621], Nelson et al. 2004:174 [ref. 27807], McEachran & Fechhelm 2005:742 [ref. 28815], Matamoros et al. 2009:26 [ref. 31241], Bernal & Rocha 2011:66 [ref. 31336] with modified range, Smith-Vaniz & Jelks 2014:82 [ref. 33341], Wirtz et al. 2014:10 [ref. 33516], Pinheiro et al. 2015:31 [ref. 34324], Triay-Portella et al. 2015:168 [ref. 36561], Rocha in Carpenter & De Angelis 2016:2861 [ref. 34618], Spier et al. 2018:16 [ref. 36103], Brown et al. 2019:180 [ref. 36444], Carvalho-Filho et al. in Marceniuk et al. 2021:660 [ref. 38945], Carvalho-Filho 2023:244 [ref. 40480], Ceríaco et al. 2023:67 [ref. 40710], Hoff et al. 2023:5 [ref. 40463]). Current status: Valid as Acanthurus bahianus Castelnau 1855. Acanthuridae. Distribution: Western Atlantic: Maranhão south to Santa Catarina (Brazil), including offshore islands; southern central Atlantic: Ascension and St. Helena islands. Invasive at Canary Islands. Habitat: marine.