Sure. Thank you for the question.
The rainbow trout or the other trout and salmon species were introduced into the Great Lakes to replace the lake trout, which had been decimated a long time ago. They had the same sort of ecological role. The Asian carp have a completely different role. We do not have these huge fishes that are planktivores—they're feeding on the microscopic organisms that you can't see in the water column.
They compete with every species. Every species, at some point, no matter how big they grow, will feed on those microscopic organisms. These Asian carp grow to be over a metre long, up to 50 kilograms. Every day of their life they're feeding on those organisms, at a rate of about 40% of their body weight per day. The reason they're a game changer is because they're unlike anything the Great Lakes have ever seen.