. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 120 CALIFORNIA FISH AND GAME NOTES A BLUE CATFISH FROM THE SACRAMENTO- SAN JOAQUIN DELTA A blue catfish, Ictalurus furcatus (LeSueur), was captured in the San Joaquin River near Mossdale, CA (lat 37° 48'N, long 121° 18'W) on 6 December 1978. The fish was captured in a hoop net operated to catch white catfish for tagging. This is the first reported catch of a blue catfish in public waters of northern FIGURE 1. Blue catfish
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 120 CALIFORNIA FISH AND GAME NOTES A BLUE CATFISH FROM THE SACRAMENTO- SAN JOAQUIN DELTA A blue catfish, Ictalurus furcatus (LeSueur), was captured in the San Joaquin River near Mossdale, CA (lat 37° 48'N, long 121° 18'W) on 6 December 1978. The fish was captured in a hoop net operated to catch white catfish for tagging. This is the first reported catch of a blue catfish in public waters of northern FIGURE 1. Blue catfish, Ictalurus furcatus, 535 mm tl taken in the San Joaquin River near Mossdale, San Joaquin County, California, 6 December 1978. Photograph by Ron Cole and the author, January 1979. Identification of the specimen was confirmed by W. I. Follet, California Academy of Sciences, San Francisco. It was a female, 436 mm sl, 535 mm tl, that weighed kg. Identification of the specimen was based on the following characteristics: distal margin of the anal fin nearly straight, anal fin base length into standard length times, two-thirds of the lobe of the adipose fin free of the body, eyes located low on the head, tail deeply forked, pronounced hump between head and dorsal fin, and fins darker than body. Anal fin ray count was 29, which differs from the expected anal fin ray count of 30-36 for blue catfish (Trautman 1957, Cross 1967). The specimen was deposited with the California Academy of Sciences, Department of Ichthyology (Catalog Number CAS42576). The native range of the blue catfish is in large river systems from Ohio and Minnesota southward into Mexico (Pelzman 1971). They were first introduced. 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 C
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