Populations of red swamp crayfish were first detected in Michigan in 2017, with simultaneous discoveries in Sunset Lake in Kalamazoo and a drainage pond in Pontiac, the DNR said.

Populations of red swamp crayfish were first detected in Michigan in 2017, with simultaneous discoveries in Sunset Lake in Kalamazoo and a drainage pond in Pontiac, the DNR said.

Pacific Northwest Crater Lake managers introduced an invasive crayfish in 1915. Now it may wipe out a unique newt Updated: Oct. 12, 2024, 10:12 p.m. | Published: Oct. 11, 2024, 5:04 p.m.

State officials on July 24 said an invasive crayfish species that has been found in several Michigan counties was discovered in a rearing pond at Wolf Lake State Fish Hatchery. The Michigan Department ...