Question: what species of fish are in lake michigan

title: Lake Michigan
text: Lake Michigan is home to a wide variety of fish species and other organisms . It was originally home to lake whitefish , lake trout , yellow perch , panfish , largemouth bass , smallmouth bass and bowfin , as well as some species of catfish . As a result of improvements to the Welland Canal in 1919 , an invasion of sea lampreys and overharvesting , there has been a decline in native lake trout populations , ultimately causing an increase in the population of another invasive species , the alewife . As a result , salmonids , including various strains of brown trout , steelhead ( rainbow trout ) , coho and chinook salmon , were introduced as predators in order to decrease the alewife population . This program was so successful that the introduced population of trout and salmon exploded , resulting in the creation of a large sport fishery for these introduced species . Lake Michigan is now stocked annually with steelhead , brown trout , and coho and chinook salmon , which have also begun natural reproduction in some Lake Michigan tributaries . However , several introduced invasive species , such as lampreys , round goby , zebra mussels and quagga mussels , continue to cause major changes in water clarity and fertility , resulting in knock - on changes to Lake Michigan 's ecosystem , threatening the vitality of native fish populations . 

Answer: answer: Lake Michigan was originally home to lake whitefish , lake trout , yellow perch , panfish , largemouth bass , smallmouth bass and bowfin , as well as some species of catfish. Lake Michigan is now stocked annually with steelhead , brown trout , and coho and chinook salmon , which have also begun natural reproduction in some Lake Michigan tributaries. However , several introduced invasive species , such as lampreys , round goby , zebra mussels and quagga mussels , continue to cause major changes in water clarity and fertility , resulting in knock - on changes to Lake Michigan 's ecosystem , threatening the vitality of native fish populations.