------3 Introduction----------------4 Description of the area---------------------------5 Species of fish present-------------------------------9 History* of grayling in the Centennial Valley -------------9 Present status of the grayling in the Centennial Valley------11 Acknowledgments-----------------------------------------15 Life history observations -------------------------------15 Spawning---------------------------------------17 Hatching and later stages-------------------------------19 Age and growth -----23 Age composition----------------------------------------25 Management ---------27 Ebqjeriment in fish removal ------------------------27 Proposed management of the Red Rock River drainage area above the Lima Dam for grayling---------36 Grayling management in other areas ------40 Summary-----------------------------------------42 Literature cited----------44
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Perry H. Nelson (1954) studied this question.
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