Three Asian carp now call Chicago's Shedd Aquarium home.
Shedd Aquarium debuted the fish on Thursday. Fisheries biologists with the Illinois Department of Natural Resources found the fish in an inland lagoon at Chicago's Humboldt Park in October.
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Officials say they're unsure how the invasive species ended up in the lagoon. The carp are now on public display.
Asian carp were imported decades ago to the U.S. They migrated up the Mississippi and Illinois rivers and are poised to invade the Great Lakes, where scientists say they could out-compete native fish for food.