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<br />. <br /> <br /> <br /> <br />-. <br /> <br />, <br /> <br />6" <br />~ <br /> <br />~.-, <br /> <br />~. <br />t <br />L <br />~ <br />-...: <br />}._. <br /> <br />.~ <br />'.~{ <br />~. <br />;t <br />-~ <br />.~ <br />~. <br />t <br />J;, <br />~~ <br /> <br />~ <br /> <br />T.J-/! J- t1v,rph y <br />/qSO _ <br />THE LIFE HISTORY OF THE SACRAMENTO <br />SQUAWFISH (PTYCHOCHEILUS GRANDIS) 1 <br /> <br />. - ~ <br /> <br />B). ALAN C. TAFT ana GAJlTllI. lIt;RPHY <br />Bureau of Fish C"nsernHiOD <br />California l>i\-isioll of Fish aDd Game <br /> <br />INTRODUCTION <br /> <br />TIle Sal.raJlJ('lltu syuawfislJ l'iydtutlllilus [lra1/(hs (J\yres) is one <br />of Jour large western carps wIJich make up the genus including the <br />larg't'st of tIle American Cyprinidae. Pi yell oeheillls lueills of the Colorado <br />nin~r attains the g-rentest size of the fonr. This speeies is reported by <br />.l(lnlan awl Eyerman (J t!96-98) to read; a melxiulUlli weight of 80 pounds. <br />J'iychoeheilus grandis of the Sacramento-San Joaquin system, Ptycho- <br />d/( ails umpqllac of the lTmpqlla Riyer, Orf'gon, and Piychochcilus ore- <br />(/ul/ulsis of the Columbia River system, aud other streams as far north as <br />tIle Fraser Riyer of British Columbia, all have a reported maximum <br />wl'ight of a bout J;) pounds and a length of three feet. <br /> <br /> <br />f~ . ~ <br />.....- <br /> <br />.. <br /> <br />INCHlS <br /> <br />FJGURE 40. Sacraml'nto E;<Juawfish, Plychochcilus grandis (Ayres) <br /> <br />Snyder (1908 and 191:i) has differentiated the three latter species <br />alJu Jefined their distribution in Oregon and California. The Sacramento <br />Sl}llawfish is found in the Sacramento-San Joaquin drainage basin, the <br />Hussian River, and the Pajaro River system. It is also known by seYeral <br />unofficial common names: Sacramento pike, chappaul, hardhead, and <br />whit dish. <br /> <br />GENERAL ECOLOGY <br /> <br />The squarish is found in lowland and middle elevation streams, the <br />ltrf'a corresponding roughly with the Upper Sonoran and Transition life <br />1.CllJes. At lower eleyations it lives with black bass and catfish. and at mid- <br />LIlt' elevations with trout. Through most of its range, the .squawfish is <br /> <br />, Submitted for publlCllUolI January, 1950. <br /> <br />( 147 ) <br />erA (,. -fcrj<>o.JA..Fif._ v- ~_e <br /> <br />v. 310) n,;).) /9ro <br /> <br />