thalassinus, Myloleucus Cope [E. D.] 1883:144 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 35; ref. 951] Goose Lake, Lake County, Oregon, U.S.A. Holotype (unique): ANSP 19848. Type catalog: Böhlke 1984:93 [ref. 13621], Gilbert 1998:156 [ref. 23395]. •Synonym of Gila bicolor (Girard 1856), but a valid subspecies -- (Gilbert 1998:156 [ref. 23395], Moyle 2002:123 [ref. 26449]). •Synonym of Siphateles bicolor (Girard 1856) -- (Scharpf 2005:41 [ref. 28940]). •Valid as Siphateles thalassinus (Cope 1883) -- (Campbell et al. 2025:56 [ref. 42575]). Current status: Valid as Siphateles thalassinus (Cope 1883). Leuciscidae: Laviniinae. Distribution: North America: Oregon and California, western U.S.A. Habitat: freshwater.