350 U. S. BUREAU OF FISHERIES 



It does, however, involve the stocking of waters where private riparian 

 rights may be exercised to exchide the general public. This policy 

 has been based upon the knowledge that the overflow from such pri- 

 vate waters will go to stock public streams and the private waters 

 frequently serve as more or less well protected nursery areas. Further- 

 more, the land owner and his friends, having satisfactory fishing in 

 their own waters, are not frequenting the heavily fished public streams. 



Further justification for this policy has been observed in the wide- 

 spread construction of small reservoirs and ponds, particularly through 

 drought areas, in the last several years. Many of these are strictly 

 private and need not be opened to public fishing. It would be an 

 extreme attitude, however, to hold that these hundreds or thousands 

 of square miles of new waters should go unstocked and Ashless because 

 the land owners do not make them accessible to the entire public. At 

 a time when public fishing waters are actually congested with anglers, 

 any step which will relieve some of this pressure is in the interest of 

 conservation. It is, therefore, felt fortunate that the Bureau is em- 

 powered to provide fish for these new lakes, pools, and reservoirs, 

 whether they be constructed under public or private auspices. 



There has been no general modification of the organization or pro- 

 cedure in the conduct of the Federal hatchery system during the past 

 year. Greater attention has been given to an effort to follow through 

 right up to the actual disposition of the fish in the lakes and streams. 

 A hatchery fish improperly planted or placed in suitable waters is an 

 unfinished product and the effort and money expended previously 

 will have been wasted. To the sportsmen in particular, who have 

 cooperated so well, the Bureau is indebted for material aid in develop- 

 ing a more rational system of stocking. 



SPECIES PROPAGATED 



The list of species handled at the Federal hatchery constitutes a 

 cross section of the most important food and game fishes of the interior 

 and coastal waters of the United States. The kinds handled number 

 the same as during the previous year, namely 43 separate species. 

 There was one change in that the white perch were not propagated 

 during the year but were replaced by a resumption of the hatching of 

 lake herring on Lake Ontario. 



It should hardly be necessary to state that of the species Hsted below 

 very few are available for general distribution throughout the coun- 

 try, and the planting of the various forms is largely confined to the 

 particular areas in which they are indigenous. 



Catfishes (Siluridae): 



Catfish {Leptops olivaris). 



Spotted channel catfish {Ictalurus pundatus); 



Horned pout (Ameiurus nebulosus). 

 Carp (Cyprinidae) : 



Common carp {Cyprinus carpio). 

 BuFFALOFiSH (Catostomidae) : 



Common buffalo (Ictiobus sp.). 

 Shad and Herring (Clupeidae) : 



Shad (Alosa sapidissima) . 

 Salmons, Trouts, and Whitefishes (Salmonidae) : 



Common whitefish (Coregonus clupeaformis) . 



Lake herring, cisco {Leucicthys sp.). 



Chinook, king or quinnat salmon (Oncorhynchus tschawytscha) ; 



Chum salmon {Oncorhynchus keta). 



