semispinosus, Hippocampus Kuiter [R. H.] 2001:320, Fig. 29 [Records of the Australian Museum v. 53; ref. 25900] East Alas Strait, Indonesia, 8°20'S, 116°50'E, depth 40-60 meters. Holotype: NTM S10749-006. Paratypes: NTM S11920-002 (1). •Valid as Hippocampus semispinosus Kuiter 2001 -- (Allen & Adrim 2003:28 [ref. 26830], Fricke 2004:39 [ref. 28269], Paxton et al. 2006:828 [ref. 29073], Kuiter 2009:100 [ref. 30404], Fricke et al. 2011:376 [ref. 31242], Allen & Erdmann 2012:205 [ref. 31980], Larson et al. 2013:77 [ref. 32988], Hamilton et al. 2016:Supplement 2 [ref. 35615]). •Synonym of Hippocampus spinosissimus Weber 1913 -- (Lourie et al. 2016:40 [ref. 34632]). Current status: Synonym of Hippocampus spinosissimus Weber 1913. Syngnathidae: Syngnathinae. Distribution: Indonesia and Timor Sea region, Northern Territorry, Australia [if valid]. Habitat: marine.