patagonicus, Hippocampus Piacentino [G. L. M.] & Luzzatto [D. C.] 2004:340, Figs. 2-3, 5 [Revista del Museo Argentino de Ciencias Naturales n.s. v. 6 (no. 2); ref. 28610] Río Negro, San Antonio Oeste Bahía, 40°45'S, 64°55'W, Argentina. Holotype: MACN 8806. Paratypes: MACN 8807 (1), 8808 (1), 8809 (1). Plus non-type specimens. •Valid as Hippocampus patagonicus Piacentino & Luzzatto 2004 -- (Kuiter 2009:70 [ref. 30404], Mabragaña et al. 2011:table S2 [ref. 31800], Silveira et al. 2014:323 [ref. 33493], Lourie 2016:130 [ref. 34505], Lourie et al. 2016:35 [ref. 34632], Hamilton et al. 2016:Supplement 2 [ref. 35615], Vaccani et al. 2022:319 [ref. 39029], Carvalho-Filho 2023:101 [ref. 40480]). Current status: Valid as Hippocampus patagonicus Piacentino & Luzzatto 2004. Syngnathidae: Syngnathinae. Distribution: Southwestern Atlantic: Rio de Janeiro (Brazil) south to Patagonia (Argentina). Habitat: marine.