Brook stickleback
- kingdom: Animalia
- phylum: Chordata
- class: Actinopterygii
- order: Gasterosteiformes
- family: Gasterosteidae
- genus: Culaea
- species: Culaea inconstans
- Sault Ste. Marie
- Willowdale
Ontario- Regina
Saskatchewan
Canada- Marked Tree
Arkansas- Alamosa
- Evans
- Fort Lupton
- Sterling
Colorado- Cherry Valley
- Fox Lake
- Lake Summerset
- Plano
- Yorkville
Illinois- Guttenberg
Iowa- Cheboygan
- Indian River
- Sault Ste. Marie
- Wakefield
Michigan- Arlington
- Austin
- Hawley
- Little Canada
- Stillwater
- Vadnais Heights
Minnesota- Wibaux
Montana- Ashland
Ohio- Edinboro
- New Wilmington
- Newville
- Slippery Rock
Pennsylvania- Gallatin
Tennessee- South Burlington
Vermont
United States