[Dwolb]

It’s true it’s been an experiment since the St. Lawrence Seaway was opened, but there are plenty of native species left in the Great Lakes.

This includes everything from walleye, lake trout, and perch all the way down to daphnia and diatoms.

The problems for native species in the Great Lakes has been driven by the introduction of zebra mussels, quagga mussels, the round goby, and spiny water flea (bythotrephes) for native food sources.

These new species have interrupted the food chain and therefore the reproductive fitness for many native species which further decimates the natural Great Lakes ecosystem.