biarmatus, Gasterosteus Krynicki [J.] in Nordmann 1840:381 [Voyage dans la Russie méridionale et la Crimée; ref. 3209] Lagoons near Tarkanckut, Crimea. No types known. •Synonym of Gasterosteus aculeatus Linnaeus 1758, subspecies aculeatus -- (Okada 1961:605 [ref. 6363]). •Synonym of Gasterosteus aculeatus Linnaeus 1758 -- (Berg 1949:973 [ref. 20662], Paepke in Bănărescu & Paepke 2002:209 [ref. 25856], Parin et al. 2014:203 [ref. 33547], Denys et al. 2022:397 [ref. 40085]). Current status: Synonym of Gasterosteus aculeatus Linnaeus 1758. Gasterosteidae. Habitat: freshwater, brackish, marine.