''Hippocampus severnsi'' (Severn's pygmy seahorse) is a synonym of ''

Hippocampus pontohi ''Hippocampus pontohi'', also known as Pontoh's pygmy seahorse or the weedy pygmy seahorse, is a seahorse of the family Syngnathidae native to the central Indo-pacific. Named after Hence Pontoh, the Indonesian dive guide from Bunaken (Manado) who ...

'', Lourie & Kuiter, 2008.Lourie, S. A., R.A. Pollom and S.J. Foster, 2016. A global revision of the seahorses Hippocampus Rafinesque 1810 (Actinopterygii: Syngnathiformes): taxonomy and biogeography with recommendations for further research. Zootaxa, 4146(1):1-66.

References

severnsi Fish described in 2008 {{Syngnathiformes-stub