Disclaimer:

The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

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Common name: Hitch

Taxonomy: available through www.itis.gov

Identification: Moyle (1976a); Page and Burr (1991).

Size: 36 cm.

Native Range: Clear Lake, Russian River, Sacramento-San Joaquin, San Francisco, and Monterey Bay drainages, California (Page and Burr 1991).

Alaska	Hawaii	Puerto Rico & Virgin Islands	Guam Saipan

Native range data for this species provided in part by NatureServe

Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Means of Introduction: Some records may represent regular immigrants from central California (Swift et al. 1993). Some records may be the result of bait bucket releases. The species was reportedly sold as bait in the lower Colorado River (Miller 1952). Kimsey and Fisk (1960) suggested that it was one of several species in California widely transported as bait. They reported that it was collected in 1954 from Ramer Lake, Imperial County, about 320 road miles south of its regular range.

Status: Established in parts of southern California (Swift et al. 1993).

Impact of Introduction: Unknown. Possibly in reference to introduced populations, Moyle (1976a) stated that the species is largely regarded as a nuisance by fisheries managers.

Remarks: McGinnis (1984) stated that this species was apparently introduced into the Russian River of California. Other authors (e.g., Page and Burr 1991) apparently consider it to be native to that drainage. Voucher specimens: California (LACM 45699-1, 45701-1).

Other Resources:
US Fish and Wildlife Service Ecological Risk Screening Summary for Lavinia exilicauda

Author: Nico, L.

Peer Review Date: 8/5/2004

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.