CONTENTS 



Page 



Introduction 1 



Methods of collection 2 



Electric barriers 2 



Electric shockers 3 



Fyke nets „ 3 



Chemical treatments 3 



Streams, their geographical location and species collected 5 



Michigan 5 



Alger County 5 



Baraga County 5 



Chippewa County 5 



Gogebic County 6 



Houghton County 6 



Keweenaw County (Isle Royale) 6 



Luce County 7 



Marquette County 7 



Ontonagon County 7 



Wisconsin 8 



Ashland County 8 



Bayfield County 8 



Douglas County 8 



Iron County „ 8 



Minnesota 9 



Cook County 9 



Lake County 9 



St. Louis County 9 



Species records by stream 9 



Acknowledgments 61 



Literature cited 6l 



FIGURES 



1. Location of Lake Superior streams where fish were collected .... 4 

 Figures 2-52 - Species records by stream 



2. Silver lamprey (adult), Ichthyomyzon unicuspis 10 



3. Northern brook lamprey (adult), Ichthyomyzon fossor 11 



4. Silver and northern brook lampreys (ammocetes), Ichthyomyzon sp. 12 



5. Sea lamprey, Petromyzon marinus . 13 



6. American brook lamprey, Lampetra lamottei 14 



7. Lake sturgeon, Acipenser fulvescens „ 15 



Longnose gar, Lepisosteus osseus 15 



Bowfin, Amia calva 15 



Alewife, Alosa pseudoharengus . 15 



8. Brown trout, Salmo trutta 16 



9. Rainbow trout, Salmo gairdneri 17 



10. Pink salmon, Oncorhynchus gorbuscha , 18 



Lake trout, Salvelinus namaycush . . 18 



Lake herring, Coregonus artedii 18 



Round whitefish, Prosopium cylindraceum 18 



11. Brook trout, Salvelinus fontinalis 19 



12. American smelt, Osmerus mordax 20 



13. Central mudminnow. Umbra limi 21 



14. Northern pike, Esox lucius . . . 22 



Muskellunge, Esox masquinongy 22 



15. Carp, Cyprinus carpio •. 23 



Pearl dace, Semotilus margarita 23 



16. Creek chub, Semotilus atromaculatus . i. 24 



17. Lake chub, Hybopsis plumbea 25 



18. Hornyhead chub, Hybopsis biguttata , 26 



