Pogonichthys ciscoides Hopkirk, 1974 "1973"
Clear Lake split-tail, Clear Lake splittail
Taxonomy & Nomenclature
Conservation Status
Missing (Jelks et al., 2008:391) or Extinct (Miller et al., 1989; Burkhead, 2012; NatureServe, 2025)
Last record: 1970 (Miller et al. 1989:28; NatureServe, 2025)
IUCN RedList status: Extinct
Estimated date of extinction: 1970 (Burkhead, 2012)
Distribution
Clear Lake, Lake County, California, USA
Biology & Ecology
Hypodigm
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: 1-160. Berkeley and Los Angeles: University of California Press.
Other references:
Burkhead, Noel M. (2012). Extinction Rates in North American Freshwater Fishes, 1900–2010. BioScience 62(9): 798-808.
Hubbs. (1974). Copeia 1974: 808-809.
Hugg, D. O. (1996). MAPFISH georeferenced mapping database. Freshwater and estuarine fishes of North America. Life Science Software. Dennis O. and Steven Hugg, 1278 Turkey Point Road, Edgewater, Maryland, USA.
Jelks, Howard L., Walsh, Stephen J., Burkhead, Noel M., Contreras-Balderas, Salvador, Díaz-Pardo, Edmundo, Hendrickson, Dean A., Lyons, J., Mandrak, Nicholas E., McCormick, Frank, Nelson, Joseph F., Platania, Steven P., Porter, Brady A., Renaud, Claude B., Schmitter-Soto, Juan Jacabo, Taylor, Eric B. and Warren, Melvin L. Jr. (2008). Conservation status of imperiled North American freshwater and diadromous fishes. Fisheries 33(8): 372-407.
Lee, D. S., Gilbert, C. R., Hocutt, C. H., Jenkins, R. E., McAllister, D. E. and Stauffer, J. R., Jnr. (1980). Atlas of North American freshwater fishes. North Carolina State Museum of Natural History, Raleigh, North Carolina.
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.
Moyle, P. B. (1976). Inland Fishes of California. Berkeley: University of California Press.
Moyle, P. B. (2002). Inland fishes of California. Revised and expanded. University of California Press, Berkeley, California.
Murphy, G. I. (1951). The fishery of Clear Lake, Lake County, California. Calif. Fish Game 37: 439-484.
NatureServe. (2013). Pogonichthys ciscoides. The IUCN Red List of Threatened Species 2013: e.T17874A19032197. https://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T17874A19032197.en. Accessed on 19 June 2022.
NatureServe. (2025). Pogonichthys ciscoides: Clear Lake Splittail. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available at: https://explorer.natureserve.org/ [Accessed 13 April 2025]
Nelson, J. S., Crossman, E. J., Espinosa-Perez, H., Findley, L. T., Gilbert, C. R., Lea, R. N. and Williams, J. D. (2004). Common and scientific names of fishes from the United States, Canada, and Mexico. American Fisheries Society, Special Publication 29, Bethesda, Maryland. 386 pp.
Page, L. M., Bemis, K. E., Dowling, T. E., Espinosa-Pérez, H. S., Findley, L. T., Gilbert, C. R., Hartel, K. E., Lea, R. N., Mandrak, N. E., Neigbors, M. A., Schmitter-Soto, J. J. and Walker, H. J., Jnr. (2023). Common and scientific names of fishes from the United States, Canada, and Mexico. Eighth edition. American Fisheries Society (AFS), Special Publication 37, Bethesda, Maryland, 439 pp.
Page, L. M. and Burr, B. M. (1991). A field guide to freshwater fishes: North America north of Mexico. Houghton Mifflin Company, Boston, Massachusetts. 432 pp.
Page, L. M. and Burr, B. M. (2011). Peterson field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Harcourt, Boston, Massachusetts. xix + 663 pp.
Robins, C. R., Bailey, R. M., Bond, C. E., Brooker, J. R., Lachner, E. A., Lea, R. N. and Scott, W. B. (1991). Common and scientific names of fishes from the United States and Canada. American Fisheries Society, Special Publication 20. 183 pp.
World Conservation Monitoring Centre. (1996). Pogonichthys ciscoides. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. (http://www.iucnredlist.org). Downloaded on 31 May 2013.