OsmerusOsmerus is a genus of smelt.SpeciesThere are currently three recognized species in this genus: Osmerus dentex Osmerus eperlanus Osmerus mordax * Osmerus mordax dentex Steindachner & Kner, 1870 * Osmerus mordax mordax The Pygmy smelt Osmerus spectrum described by Edward Drinker Cope in 1870 is a synonym of O. mordax.;Fossil species Osmerus albyi Sauvage, 1870 Osmerus glarisianus Agassiz, 1842 Osmerus larteti Sauvage, 1870 Osmerus propterygius Sauvage, 1870 Osmerus stilpnos Sauvage, 1870