Unarmored threespine stickleback

The Unarmored threespine stickleback lives in the benthopelagic, freshwater, brackish, marine environment.

The unarmored threespine stickleback was listed as endangered in 1970 under the precursor to today’s Endangered Species Act. Critical habitat was proposed for the species by the U.S. Fish and Wildlife Service in 1980, but never designated. More

The unarmored threespine stickleback is one of several subspecies of Gasterosteus aculeatus in the family Gasterosteidae. First described in 1854, it has been the object of comprehensive studies in an effort to properly relate it to other subspecies. More

The unarmored threespine stickleback a subspecies of the threespine stickleback is found only in North America and its recognised range is only in parts of California. Other threespine sticklebacks can be found circum polar. Mostly fresh water only but some are anadromous. More

williamsoni, the unarmored threespine stickleback, is found only in North America; its recognised range is southern California, though there are isolated reports of it occurring in British Columbia and Mexico; More

The unarmored threespine stickleback belongs to a group of fishes which fashion a nest for their eggs and young. It will use bits of plants, twigs, and other debris and weave them together, forming a nest attached to plants beneath the surface. More

The unarmored threespine stickleback was described by Girard in 1854 using specimens from the Soledad Canyon (known to him as William's Pass), Los Angeles County, California. More

Thirty-one years after the unarmored threespine stickleback landed on the federal list of endangered species, the beleaguered little fish continues to occupy a stretch of the Santa Clara River that runs through Soledad Canyon, just outside Santa Clarita. More

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The Unarmored Threespine Stickleback is a tiny, inconspicuous fish that lives at the base of Magic Mountain in the Santa Clara River. Magic Mountain, the mountain, is part of the watershed for the Santa Clara River. More

    The unarmored threespine stickleback is a small fish that we listed  as endangered on October 13, 1970 (35 FR 16047), under the authority of  the Endangered Species Conservation Act of 1969 (Pub. L. 91-135, 83  Stat. 275 (1969)). More

The unarmored threespine stickleback was listed as endangered in 1970. More

The unarmored threespine stickleback was listed as endangered in 1970. “Critical Habitat” was formally proposed for the species in 1980 by the U.S. More

The Unarmored Threespine stickleback, is known to occur statewide in California. This report contains Counties in which this species is known to occur. If you are looking for the Section 7 range (for Section 7 Consultations), please visit the IPaC application. More

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