concinnus, Gasterosteus Richardson [J.] 1836:57 [Fauna Boreali-Americana Part 3; ref. 3731] Saskatchewan (53°N) to Great Bear Lake (65°N), Canada. Syntypes: (many) whereabouts unknown. •Synonym of Gasterosteus aculeatus Linnaeus 1758 -- (Monod 1973:281 [ref. 7193]). •Synonym of Pungitius pungitius (Linnaeus 1758), subspecies occidentalis (Cuvier 1829) [unavailable] -- (Keivany & Nelson 2000:118 [ref. 24720]). •Synonym of Pungitius pungitius (Linnaeus 1758) -- (Monod 1973:284 [ref. 7193], Scott & Crossman 1998:674 [ref. 24570], Denys et al. 2022:399 [ref. 40085]). Current status: Synonym of Pungitius pungitius (Linnaeus 1758). Gasterosteidae. Habitat: freshwater, brackish.