. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. NOTES 119 SACRAMENTO. PACIFIC OCEAN FIGURE 1. Map showing the locations of streams where pugheaded Hesperoleucus symmetricus were collected. On 10 October 1981, a second pugheaded California roach was collected from Del Puerto Creek, an intermittent tributary of the San Joaquin River system, draining the dry, eastern slope of the Inner Coast Ranges (Figure 1). This speci- men measured 67 mm fl and was collected in a sample of 10 juven
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. NOTES 119 SACRAMENTO. PACIFIC OCEAN FIGURE 1. Map showing the locations of streams where pugheaded Hesperoleucus symmetricus were collected. On 10 October 1981, a second pugheaded California roach was collected from Del Puerto Creek, an intermittent tributary of the San Joaquin River system, draining the dry, eastern slope of the Inner Coast Ranges (Figure 1). This speci- men measured 67 mm fl and was collected in a sample of 10 juvenile and adult California roach, ranging from 37 to 80 mm fl (Figure 3). As was evident in the other pugheaded specimen, the cranium in the region of the eyes had been elevated. The orbit exhibited a slightly enlarged diameter, but no exophthalmia was evident. In contrast to the San Lorenzo Creek roach, this specimen exhibited a blunted snout and protruding lower mandible (Figure 4). The angle created by the intersection of the line of the flattened cranium and the line of the snout approaches 90°. The upper jaw appears to be lacking. Both specimens exhibited no other external morphological abnormalities, although both non-pugheaded fish and the single pugheaded specimen collected in Del Puerto Creek were heavily parasitized. The belly of each specimen was distended when collected, indicating that the abnormality did not inhibit feeding ability. Both specimens have been retained by the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game. [San Francisco, etc. ] State of California, Resources Agency, Dept. of Fish and Game
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