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REPORT OF THE COMMISSIONERS OF 



part of fungussed fishes to keep in the shallower, and consequently warmer, parts of 

 the water, and this of course results in the more rapid growth of the sarcophytic plant, 

 and the death of the fishes is thus hastened. 



All kinds of fishes and fish eggs are subject to the attacks of such fungus, 

 especially after having been even slightly scratched or injured. As a consequence 

 the lamprey attacks on fishes cause wounds that often become the seat of a slowly 

 spreading, but fatal, fungus. We have seen many nests of the bullhead or horned pout 

 (Ameiurus nebulosus) with all the eggs thus destroyed, and we have found scores of 

 fishes of various kinds thus killed or dying. It is well known that in many rivers this 

 is the apparent cause of great nisortality among adult salmon. Yet we really doubt 

 if it ever attacks uninjured fishes that are in good, strong physical condition which 

 have not at least had the slime rubbed from them when captured. It is contagious, 

 not only being conveyed from one infested fish to another, but from dead flies to 

 fishes. (For a further discussion of this subject, see the interesting and valuable 

 Manual of Fish Culture, by the United States Fish Commission, 1897.) 



Poinds of Fisl)es Attached. 



We have personally observed, or have received reliable reports of, the following 



species of fishes being attacked by the Lake Lamprey : 



1. Rock or red sturgeon [Acipenscr rubicundus Le Sueur). 



2. Long-nosed gar, gar pike, or gar [Lcpisostcus ossens Linnaeus). 



3. Bowfin or dogfish [Ainia calva Linnaeus). 



4. Bull-head, horned pout or catfish [Ameiurus ncbulosus Le Sueur). 



5. Common sucker or white sucker [Catostomus connncrsonii Lacepede). 



6. Chub sucker or creek fish [Erimyzon sucetta Lacepede). 



7. Oblong chub sucker [Erimyzon sucetta oblongus Mitchill). 



8. Mullet or golden sucker [Moxostoma aureolum Le Sueur). 



9. Large- scaled sucker [Moxostoma macrolepidotum Le Sueur). 



10. Carp, German carp {Cyprians carpio Linnaeus). 



1 1. Golden bream [Abramis chrysoleticas Mitchill). 



12. Smelt of the New York lakes [Argyrosomus osmeriformis H. M. Smith) 



13. Cisco, lake herring, chameau [Argyrosomus artedi Le Sueur). 



14. Whitefish [Coregonus clnpciformis Mitchill). 



15. Lake trout [Cristivomer namaycush Walbaum). 



16. Pickerel or eastern pickerel [Lucius reticulatus Le Sueur). 



17. Pike, also called " pickerel" [Lucius lucius Linnaeus). 



18. Muscalonge or great pike [Lucius masquinongy Mitchill). 



