A Visit to a 



Federal Fish Hatchery 









We raise rainbow and brown trout here. Other 

 Fisli and Wildlife Service hatcheries raise dif- 

 ferent species of trout, like brook trout and cut- 

 thi'oat trout. Still other hatcheries raise a number 

 of other kinds of fish. Each hatchery propagates 

 the kind of fish needed to support fishing in the 

 waters stocked by the hatchery — waters in national 

 parks and forests, wildlife refuges, and other fish- 

 ing areas, and in farm fish ponds. 



We plant — that is, we place in lakes — some of 

 our trout when tliey, are fingerlings, about II/2 to 



.5 inches long. We plant them as fingerlings if it 

 is likely to be some little time before fishermen 

 will catch them, and if they will have a chance to 

 feed on plenty of insects, insect eggs and larvae, 

 and smaller fish or worms. 



On the other hand, when we stock waters where 

 a great many fishermen will fish for the trout as 

 soon as they are planted, we hold and feed the 

 trout here until they are 6 to 9 inches long — or of 

 legal size according to the regulations of the State 

 in whose waters they are to be planted. Naturally, 



'■^■'^ ' ^ 1962 



! 



J WOODS HOLE, MASS. 



UNITED STATES DEPARTMENT OF THE INTERIOR 



FISH AND WILDLIFE SERVICE 



CIRCULAR 28 



For sale by the Superintendent of Documents, U. S. Government Printing Office 

 Washington 25, D. C. - Price 10 cents 



