microstephanus, Hippocampus hippocampus Slastenenko [E. P.] 1937:81 [Archives of the Zoological Museum of Moscow State University v. 4; ref. 21851] Black Sea. Syntypes: none found at ZIN. •Synonym of Hippocampus ramulosus Leach 1814 -- (Wheeler 1973:279 [ref. 7190]). •Possibly valid (as Hippocampus microstephanus Slastenenko 1937) -- (Kuiter 2009:19 [ref. 30404]). •Synonym of Hippocampus hippocampus (Linnaeus 1758) -- (Parin et al. 2014:207 [ref. 33547]). •Synonym of Hippocampus guttulatus Cuvier 1829 -- (Lourie et al. 1999:97 [ref. 23993], Bilecenoğlu et al. 2002:68 [ref. 26753], Lourie et al. 2016:26 [ref. 34632]). Current status: Synonym of Hippocampus guttulatus Cuvier 1829. Syngnathidae: Syngnathinae. Distribution: Black Sea [if valid]. Habitat: brackish, marine.