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Species Narrative <br />Colorado Squawfish <br />The presence of Colorado squawfish in the New Mexico portion <br />of the San Juan River was confirmed in 1959 when two specimens <br />were taken near Rosa in Rio Arriba County (Koster 1960). A <br />specimen at the U.S. National Museum (USNM 132091) was collected <br />in 1936 by E. Barker, but the locality data is listed as <br />"Farmington (?)??. We are currently attempting to secure <br />additional information on the origin of this specimen. <br />The next verified records of this species in New Mexico were <br />in 1961 during pre-impoundment studies of Navajo Reservoir-(Olson. <br />1962). The exact number of individuals encountered during this <br />survey is unclear but it appears as though at least eight were <br />captured. Four specimens between 175-200 mm TL were preserved <br />and deposited in the ichthyological collection at the University <br />of New Mexico (UNM 767). Four additional specimens obviously <br />greater than 300 mm TL were photographed and appear on page 27 of <br />that report (Olson 1962). The disposition of these specimens is <br />unknown. <br />In 1965, a Colorado squawfish, caught by hook and line near <br />Bloomfield, was reported to H.F. Olson (Olson, personal <br />communication). At that time, this was the most downstream <br />record of the species in New Mexico, and prior to our 1987 survey <br />represented the last individual taken from the New Mexico portion <br />of the San Juan River. <br />35