PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 

 FISCAL YEAR 1932^ 



By Glen C. Leach, Chief Division of Fish Culture 



CONTENTS 



Page 



Introduction 531 



Part 1. — Fish Production: Propagation and Rescue Work 



Species handled 532 



Output 533 



Cooperation with other conservation agencies 535 



Cooperative fish nurseries 536 



State fish-cultural activities 538 



Salvage operations 541 



Transfers of eggs between stations 542 



Assignments of fish eggs to States, Territories, and foreign countries 543 



Output of stations and substations 544 



Egg collections 551 



Xotes on operations 552 



Commercial species 552 



Rocky Mountain game fish propagation 555 



Game fish propagation in New England 558 



Game fish propagation at combination trout and pond-fish stations.. 559 



Pond-fish stations 560 



Rescue operations and Upper Mississippi Wild Life Refuge 561 



Fish-cultural notes 562 



Pond-cleaning pumps .. ._ 562 



Special distribution trucks 563 



Effect of weather on southern pond stations 563 



Rearing of grayling 563 



Eradication of furunculosis 563 



New form of pond construction 563 



Tagging of bass 564 



Use of nickel mesh for hatching marine eggs 564 



The aquarium 565 



Part 2. — Distribution of Fish and Fish Eggs 

 Method of distribution 568 



INTRODUCTION 



The artificial propagation of fish in hatcheries and their distribution 

 in pubhc waters by the Federal Government and the States is one 

 phase of the important problem of conservation of aquatic resources. 

 In distributing commercial species of fish governmental hatcheries are 

 helping to provide the raw material for an important food-producing 

 industry, the commercial fisheries. In propagating and planting game 

 fishes the agencies so concerned are acting with a view to conserving 

 recreational facilities, an activity comparable to the maintenance of 

 national and State parks. 



In addition to this phase of the conservation of game fish, there are 

 indirect economic factors involved, since the sport of angling has a 



' Approved for publication, Nov. 11, 1932. 



531 



