Tom Lounsbury: Progress has brought invasive species with it Tom Lounsbury, Hearst Michigan FacebookTwitterEmail 1of6 The common carp can come in some robust sizes, such as this one taken during a GLBC bowfishing contest. (Tom Lounsbury/Hearst Michigan) Show MoreShow Less 2of6 Randy Claramunt of MDNR Fisheries shows a dandy lake trout he caught in Lake Huron, near Grindstone City. Due to invasive species such as the sea lamprey, as well as over-fishing, the lake trout was nearly eliminated in Michigan by the mid-20th century. But thanks to planting hatchery fish on a regular basis, it was brought back from the brink and is now flourishing and featuring natural reproduction. Claramunt could easily tell a hatchery fish from a natural reproduction by examining for a clipped fin. This dandy lake trout was from natural reproduction. (Tom Lounsbury/Hearst Michigan) Show MoreShow Less