Fish
Colorado pikeminnow (Endangered, extirpated, not reintroduced)
Razorback sucker (Endangered, extirpated, not reintroduced)
Flannelmouth sucker (nearly extirpated, supplemental reintroduction)
Bluehead sucker (nearly extirpated, supplemental reintroduction)
Roundtail chub (extirpated and reintroduced)
Speckled dace Mottled sculpin (not confirmed, single brief visual record in river bed)
Green sunfish (exotic, invasive)
Fathead minnow (exotic, invasive)
Rainbow trout (exotic, not persistent)