The great lakes system has identified over 180 non-native (or non-indigenous) species! How many can you name?
Remember that there is a difference between non-native and invasive. When invasive species are introduced to a new area, they take over and disturb the economy, ecology, and recreation opportunities of an area.
When non-native species that are not invasive are introduced to a new area, they may have no impact on ecosystem or economic health.
When a non-native species is found, it may not be known if it will become a threat to the ecosystem until it is too late to stop it. Others such as the Chinook and Coho Salmon have been planted by the State since the 1960's after some native salmon species became extinct in the late 1800's.