Table of Contents 



A Fisherman's Luck 1 



Fishing Technique 6 



Lake Dynamics 14 



Fish Popuhitions 23 



Management of Waters for Fish Production 28 



Improvement of Lakes and Streams 34 



La^^ s and Propagation 42 



Parasites of Fishes 47 



The Structure of Fishes 52 



Classification and Origin of Fishes 62 



Artificial Key to Families of Common Fishes 64 



The Cyclostomes 66 



Family PETHOMYZONIDAE (The Lamjn'ey Family) . 67 



The Osteichthyes or Bony Fishes 72 



Family POLYODONTIDAE (The Paddlefish Family) . 73 



Family ACIPENSERIDAE (The Sturgeon Family) . . 75 



Family LEPISOSTEIDAE (The Gar Family) .... 81 



Family AMIIDAE (The Bow fin Family) 85 



Family HIODONTIDAE (The Mooneye Family) ... 88 



Family CLUPEIDAE (The Herring Family) 90 



Family OSMERIDAE (The Sinelt Family) 93 



Family COREGONIDAE (The Whitefish Family) ... 94 



Family SALMONIDAE (The Salmon and Trmit Family) . 105 



Family CATOSTOIVIIDAE (The Sucker Family) ... 117 



Family CYPRINIDAE (The Minnoiv Family) .... 138 



viii 



