Red Fish
- County:
- Mellette County
- County Seat:
- No
- Area (mi²):
- 43.295
- State:
- South Dakota
Red Fish is located in Mellette County, South Dakota. Red Fish has a 2025 population of 17 . Red Fish is currently declining at a rate of 0% annually and its population has decreased by -5.56% since the most recent census, which recorded a population of 18 in 2020.
The median age in Red Fish is 49.8 years: 0 years for males, and 0 years for females. For every 100 females there are 26.3 males.