Status of the Northern Madtom, Noturus stigmosus, in Canada

The Northern Madtom, Noturus stigmosus, is a secretive fish naturally rare throughout its North American range. It is known in Canada from a single record from Lake St. Clair, Ontario. Northern Madtoms have been reported from nearby locations on the United States side of the Detroit River. Since species of madtoms are elusive and seldom captured except by specialized techniques, there is a slight possibility that a remnant indigenous population exists in Canada, or that one has been extirpated. There is insufficient scientific information for consideration of COSEWIC status designation.