1. Identification of Nongame Fishes Workshop Michigan AFS Lake Superior State University March 3-4, 2008 Presented by Kevin Wehrly Institute for Fisheries Research Michigan Department of Natural Resources and University of Michigan

2. Acknowledgement All photographs, unless otherwise noted, were taken by John Lyons and accessed from www.WiscFish.com

3. Exotics and Natives Established exotics, potentially invasive species, and their native look-alikes

4. Exotics Alewife—established in Michigan Common Carp and goldfish—established in Michigan Asian and grass carps—not established in Michigan Smelt—established in Michigan 3 spine Stickleback—established in Michigan Goby—established in Michigan Ruffe—established in Michigan Cichlids—occasionally found but not established in Michigan Snakehead—not established in Michigan

5. Alewife exotic Saw-tooth keel on belly Mouth upturned Native look-alike—gizzard shad

6. Gizzard shad native Saw-tooth keel on belly Mouth subterminal, blunt snout Last dorsal fin ray elongated Exotic look-alike—alewife

7. Common carp and goldfish exotic Only minnows with serrated spine in dorsal and anal fins Native look-alike—may appear similar to buffaloes

8. Common carp and goldfish exotic Common carp Mouth horizontal 2 fleshy barbels Goldfish Mouth oblique No barbels

9. Silver and bighead carp exotic Large upturned mouth Eyes forward, below midline Scaleless keel on all or part of belly Not established in Michigan

10. Grass carp exotic Blunt head, mouth smaller Large scales with dark edges No keel and no spines Not established in Michigan

11. Smelt exotic Teeth on jaws and tongue Adipose fin Minnows lack teeth and adipose fin Established in Michigan

12. Threespine stickleback exotic Three dorsal spines Established in Michigan Two native stickleback species

13. Threespine stickleback Native Ninespine stickleback 9 dorsal spines Brook stickleback 5 dorsal spines

14. Ruffe exotic Perch-like body Spiny and soft dorsal fins joined Rows of dark spots in dorsal fin Established in Michigan No native percid has joined dorsal fins

15. Goby exotic Pelvic fins fused to form disc 2 species –Round goby—black spot in 1 st dorsal fin –Tubenose goby—Tubelike projection from nostril May appear similar to native sculpins Established in Michigan

16. Sculpins native Pelvic fins separated Large head with spine on each side 2 dorsal fins separated Scaleless 4 species –Mottled—4 pelvic rays –Slimy—3 pelvic rays –Spoonhead—spoon-shaped head –Deepwater—4 preopercular spines Exotic look-alike—goby

17. Cichlid exotic Sunfish like body Lateral line interrupted Occasionally found in Michigan but no reproducing populations

18. Snakehead exotic Large scales on head Single large dorsal fin Large anal fin Jaws with well developed teeth Not established in Michigan May be confused with native bowfin or burbot

19. Bowfin native Gular plate Pelvic fins at midpoint of body Short anal fin Exotic look-alike—snakehead

20. Bowfin Snakehead Gular plate Pelvic fins under pectoral fins Pelvic fins at midpoint of body Long anal fin Short anal fin No gular plate

21. Burbot native 2 dorsal fins A single chin barbel Exotic look-alike—snakehead