louisianae, Syngnathus Günther [A.] 1870:160 [Catalogue of the fishes in the British Museum v. 8; ref. 1995] New Orleans, Louisiana, U.S.A. Holotype (unique): BMNH 1852.8.16.25. •Valid as Syngnathus louisianae Günther 1870 -- (Robins & Ray 1986:127 [ref. 23100], Dawson 1982:70 [ref. 6764], Boschung 1992:96 [ref. 23239], Murdy et al. 1997:139 [ref. 23144], McEachran & Fechhelm 1998:1063 [ref. 23897], Castro-Aguirre et al. 1999:230 [ref. 24550], Smith-Vaniz et al. 1999:192 [ref. 25013], Ross et al. 2001:388 [ref. 25978], Fritzsche & Vincent 2003:1222 [ref. 27044], Nelson et al. 2004:112 [ref. 27807], Kuiter 2009:254 [ref. 30404], García-Hernández et al. 2009:92 [ref. 37265] as Syngtnathus l., Page et al. 2013:114 [ref. 32708], Hamilton et al. 2016:Supplement 3 [ref. 35615], Raz-Guzmán et al. 2018:345 [ref. 36407], Bagley et al. 2023:317 [ref. 41241], Page et al. 2023:118 [ref. 40505]). Current status: Valid as Syngnathus louisianae Günther 1870. Syngnathidae: Syngnathinae. Distribution: Western Atlantic: Bermuda and Pennsylvania (U.S.A.) south to Jamaica, including Gulf of Mexico. IUCN (2015): Data Deficient. Habitat: marine.