nigricans, Atherina Richardson [J.] 1848:77, Pl. 42 (figs. 13-18) [Ichthyology of the voyage of H. M. S. Erebus & Terror v. 2 (2); ref. 3740] Falkland Islands. Holotype (unique): BMNH 1848.3.18.29. •Valid as Austromenidia nigricans (Richardson 1848) -- (Pequeño 1989:51 [ref. 14125]). •Valid as Austroatherina nigricans (Richardson 1848) -- (Lloris & Rucabado 1991:79 [ref. 22530]). •Valid as Odontesthes nigricans (Richardson 1848) -- (López et al. 1996:35 [ref. 23681], Dyer 1998:535 [ref. 23858], Dyer & Gosztonyi 1999:215 [ref. 24265], Dyer 2000:112 [ref. 26677], López et al. 2002:64 [ref. 26808], Dyer in Reis et al. 2003:522 [ref. 27061], Dyer 2006:78 [ref. 30646], Wingert et al. 2017:525 [ref. 35244], Chiaramonte et al. 2023:211 [ref. 40423]). Current status: Valid as Odontesthes nigricans (Richardson 1848). Atherinopsidae: Atherinopsinae. Distribution: Southeastern Pacific, southwestern Atlantic: Falkland Islands, straits of Magellan and Tierra del Fuego (Argentina, Chile and Falkland Islands). Habitat: freshwater, brackish, marine.