8 U. S. BUREAU OF FISHERIES. 



Part 1.— FISH PRODUCTION: PROPAGATION AND RESCUE 



WORK. 



TABULAR SUMMARIES OF OPERATIONS. 



SPECIES OF FISHES HANDLED. 



The work as conducted during the fiscal year ended June 30, 1923, 

 involved 58 species of fish, as indicated in the accompanying list, 

 each species listed being the subject of either artificial propagation 

 or rescue work. The majority of the fishes rescued from the over- 

 flowed regions of the Mississippi River are not distributed but are 

 returned to the river. These include some species of the catfishes, 

 sunfishes. suckers, carp, and pike. Very few of the commercial 

 species are supplied on application. 



list of species handled. 



The catfishes (Silurid^) : 



Blue catfish (Ictalurus furcatus). 



Channel catfish {Ictalurus punctatus) . 



Horned pout, bullhead {Ameiurus nebulosus). 



Mississippi catfish (Ameiurus lacustris). 



Yellow catfish (Ajneiurus natalis). 



Black bullhead {Ameiurus melas). 



Mud catfish {Leptops olivaris). 

 The suckers (Catostomid^) : 



Mongrel buffalofish {Ictiobus urus). 



Common buffalofish {Ictiobus cyprinella) . 



Suiallmouth l)uffalofish {Ictiobus bubalus). 

 The carps (Cyprinid^) : 



Asiatic carp {Cyprinus carpio). 

 The shads and herrings (Clupeid^) : 



Shad {Alosa sapidissima). 



Glut herring- {Pomolobus cestivalis). 



Skipjack {Pomolobus chrysochloris). 

 The salmons, trouts, whitefishes, etc (Salmonid^) : 



Common whitefishes {Coregonus albus and C. clupeaformis). 



Pilot fish {Coregonus quadrilateralis) . 



Cisco (chiefly Leucichthys artedi). 



Chinook salmon, king salmon, quinnat salmon {Oncorhynclvus tschaicytscha). 



Chum salmon, dog salmon {Oncorhynchus keta). 



Humpback salmon, pink salmon {Oncorhynchus gorbuscha). 



Silver salmon, coho salmon {Oncorhynchus kisutch). 



Sockeye salmon, blueback salmon, redfish {Oncorhynchus nerka). 



Steelhead salmon {Salmo gairdneri). 



Atlantic salmon {Salmo salar). 



Landlocked salmon {Salmo sebago). 



Rainbow trout {Salmo shasta). 



Black-spotted trout, redthroat trout {Salino Icii-isi). 



Loch Leven trout {Salmo levenensis). 



Lake trout, Mackinaw trout {Cristovomer namaycush). 



Brook trout {Salvelinus fontinalis). 

 The smelts (Osmerid^) : 



Smelt {Osmerus mordax). 



Wilton smelt {Osmerus mordax spectrum). 

 The pikes (Luciid.e) : 



Little pickerel {Lucius vermiculatus) . 



Common pickerel {Lucius lucius). 

 The mackerels (Scomijrid^) : 



Mackerel {Scomber scombrus). 



