Spirinchus is a genus of smelts (Osmeridae) from the North Pacific Ocean and adjacent streams.
Species There are currently three recognized species in this genus: †Spirinchus izumoensis (Hamada, 2026) Spirinchus lanceolatus (Hikita, 1913) (Shishamo smelt, shishamo) Spirinchus starksi (Fisk, 1913) (Night smelt) Spirinchus thaleichthys (Ayres, 1860) (Longfin smelt)
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