Wisconsin’s Department of Natural Resources (DNR) defines invasive species as a “nonindigenous species whose introduction causes economic or environmental harm or harm to human health (WI Statute Section 23.22 (1) (c)).” These nonindigenous species can dramatically spread in new habitats because they left their predators and competitors behind in their native ecosystems. Invasive species can significantly alter ecosystem functions and economic value, ecological relationships, recreation and human health.
*These are some known invasive larval fish species in Lake Michigan that were caught in the 2017 USFWS AIS EDM Program: Round goby (Neogobius melanostomus), White perch (Morone americana), Alewife (Alosa pseudoharengus), and Common carp (Cyprinus carpio).*
**Click on either the picture or common/scientific names to access larval fish species information in the Lake Michigan Drainage on species that was not caught in the 2017 USFWS AIS EDM Program. These species include Silver carp (Hypophthalmichthys molitrix), Bighead Carp (Hypophthalmichthys nobilis), Goldfish (Carassius auratus), Rainbow Smelt (Osmerus mordax), and Ruffe (Gymnocephalus cernua).**
|*Alosa pseudoharengus (Alewife)*|
|*Cyprinus carpio (Common Carp)*|
|**Hypophthalmichthys molitrix (Silver Carp)**|
|**Hypophthalmichthys nobilis (Bighead Carp)**|
|**Carassius auratus (Goldfish)**|
|*Neogobius melanostomus (Round Goby)*|
|*Morone americana (White Perch)*|
|**Osmerus mordax (Rainbow Smelt)**|
|**Gymnocephalus cernua (Eurasian Ruffe)**
No Larval Pictures of Eurasian Ruffe Available. Click on Picture/Names to Access Information about Larval Eurasian Ruffe.
**Not caught in 2017 USFWS AIS EDM Program**