"Chehalis fauna: a group of freshwater fishes isolated from all other freshwater fish populations for up to 1 million years in Chehalis River (Washington) during glaciation."
- Nooksack Dace
- Salish Sucker
- Pygmy Longfin Smelt
- Cultus Pygmy Sculpin - form of C. aleuticus
Example iNat observations:
- Nooksack Dace
- Salish Sucker
- Pygmy Longfin Smelt (none)
- Cultus Pygmy Sculpin
