Table A-20. — Numbers of bridgelip sucker X largescale sucker (hybrid) caught and CPUE 

 ( catch per unit of effort) , main stem of the YakiiEia River, 1957-58 



Table A-21. --Numbers of black bullhead caught and CPUE (catch per unit of effort), main stem of the YaKima Hiver, 1957-58 



27 



