DISTRIBUTION OF FISH AND FISU EUGS, 1012. 7 



SIZE OF ALLOTMENTS. 



Tlio Bureau does not attempt to furnish to any one applicant 

 more than a brood stock of fish for a given private pond or stream, 

 it being expected that these will bo ])rotected until they have had 

 time to rei)roduce. The number of fish in an allotment is, however, 

 a variable quantity, dej^ending upon the species and the age at 

 which distributed. Brook trout, which are distributed both as fry 

 ;uul fingerlmgs, are allotted in much larger numbers as fry than as 

 iingerlings 3 or 4 inches long. Pike perch, which, owing to their 

 excessive cannibalism, can not be reared and arc consequently dis- 

 tributed as fry, may be supplied in lots of half a million, where an 

 1 (jual water area would receive only 200 or 300 young bass from 2 to 

 5 inches long. These latter larger fish have a much better chance of 

 reaching maturity than have the f r}-, and the actual value for stocking 

 purposes of a few hundred fingerling bass may therefore equal many 

 thousand times this number of pike perch fry. 



SPECIES CULTIVATED. 



The species handled b}' the Bureau in 1911 and 1912 numbered 

 some 50 fishes and the lobster. Of these, the following were arti- 

 ficially propagated: 

 The catfishes (Silurid^): 



Horned pout, bullhead, yellow cat (Ameinnis nebulosus). 



Marbled cat (Ameiunts nebulosus marmoratus) . 

 The suckers and buffalo-fishes (Catostomid.e): 



Small -mouth buffalo-fish {Ictiobus hibalus). 



Common buffalo-fish {Ictiobus cyprinella). 



Black buffalo-fish {Ictiobus urns). 

 The shads and herrings (Clupeid^): 



Shad {Alosa sapidissima). 

 The salmons, trouts, whitefishes, etc. (Salmonid.e): 



Common whitefish {Coregonus albus and C. clu peaformis) . 



Lake herring, cisco {Leucichthys artedi). 



Chinook salmon, king salmon, quinnat salmon {Oncorhynchus tschawytscha). 



Silver salmon, coho {Oncorhynchus hisutch). 



Blueback salmon, redfish, sockeye {Onchorhynchus nerka). 



Humpback salmon {Oncorhynchus gorbuscha). 



Dog salmon {Oncorhynchus Iceta). 



Steelhead trout, hardhead {Sahno gairdneri). 



Rainbow trout {Sahno irideus). 



Atlantic salmon {Salmo salar). 



Landlocked salmon {Salmo sebago). 



Blackspotted trouts: Yellowstone Lake trout or cutthroat trout (Sahno lewisi); 

 Tahoe trout {Salmo henshawi). 



Scotch sea trout {Salmo trutta). Introduced species. 



Loch Leven trout {Salmo trutta levenensis). Introduced species, propagated in 

 limited numbers for observation. 



Lake trout, Mackinaw trout, longe, togue {Cristivomer namaycush). 



Brook trout, speckled trout {Salvelinusfontinalis). 



Sunapee trout {Salvelinus aureolus). 

 4789°— 14 G 



