The Montana Fisheries Information System (MFISH) is a database containing information on fish species distribution, supporting data for distribution, and information related to the management of aquatic resources in Montana. The database is managed and maintained by the Information Management Bureau (IMB) of the Information Services Division of Montana Fish, Wildlife, and Parks and is annually updated through interviews with MFWP, US Forest Service (USFS), US Fish and Wildlife Service (USFWS), Bureau of Land Management (BLM) and tribal fisheries biologists and supplemented with information provided in technical documents and reports.

• Data Use Permissions: If you wish to use any data for published work contact the individual data provider for permission.
• For more information on the data types available in MFISH check out the MFISH Data Definitions Document.