Endemichthys grandipinnis Hopkirk, 1974 "1973"
Clear Lake minnow
Taxonomy & Nomenclature
Synonym/s: Endemichthys grandipinnis Hopkirk, 1968 [unavailable; Fricke et al., 2026]
Conservation Status
Invalid (hybrid [Lavinia exilicauda chi x Orthodon microlepidotus]) (Miller et al., 1988:37 [as invalid only]; Gilbert, 1998:88; Frick et al., 2026)
Listed as Extinct by (Hopkirk, [1968?,] 1974 "1973"; Opler, 1977 fide Miller et al., 1989:37), but otherwise treated as doubtful or invalid (Hubbs, 1974:809; Miller & Smith, 1984; Miller et al., 1988:37; Gobalet, 1989:233; Gilbert, 1998; Fricke et al., 2026).
Distribution & Habitat
Clear Lake, Lake County, California, USA
Type locality: "Near or in the mouth of Middle Creek, Clear Lake, Lake County, California, U.S.A." (Frick et al., 2026)
Anatomy & Morphology
Biology & Ecology
Hypodigm
Holotype: CAS 11026 (Frick et al., 2026)
Paratypes: CAS 11017 (4), 54301 [= 11026] (7, 1 c&s) (Frick et al., 2026)
Media
References
Original scientific description:
Hopkirk, John D. (1974 "1973"). Endemism in fishes of the Clear Lake region of central California. University of California Publication, Zoology 96: 1-137. Berkeley and Los Angeles: University of California Press.
Other references:
Fricke, Ron, Eschmeyer, William N. and Van der Laan, Richard (eds.). (2026). Eschmeyer's Catalog of Fishes: Genera, Species, References. Electronic version of 7 July 2026. Available at: https://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp [Accessed 31 July 2026]
Gilbert, C. R. (1998). Type catalogue of Recent and fossil North American Freshwater fishes: families Cyprinidae, Catostomidae, Ictaluridae, Centrarchidae and Elassomatidae. Florida Museum of Natural History, Special Publication No. 1: i-ii + 1-284.
Gobalet, Kenneth W. (1989). Remains of Tiny Fish from a Late Prehistoric Pomo Site Near Clear Lake, California. Journal of California and Great Basin Anthropology 11(2): 231-239. https://www.jstor.org/stable/27825386
Hopkirk, J. D. (1968). Endemism in fishes of the Clear Lake region. Dissertation Abstracts International B Sciences and Engineering 29 (1): 414-B.
Hubbs, Clark. (1974). Review of: "Endemism in Fishes of the Clear Lake Region of Central California," by John D. Hopkirk. Copeia 1974(3): 808-809. https://doi.org/10.2307/1442713
Miller, Robert Rush and Smith, Gerald R. (1984). Endemichthys Revisited. Paper present ed at the annual meeting of the American Society of Ichthyologists and Herpetologists, Norman.
Miller, Robert Rush, Williams, James D. and Williams, Jack E. (1989). Extinctions of North American fishes during the past century. Fisheries 14(6): 22-38.
Opler, P. A. (1977). The parade of passing species: a survey of extinctions in the U.S. Sci. Teacher Vol. 44. 5 pp.