This diving duck lives on clear mountain rivers. It dives in fast-flowing water for fish and stays within river territories.
It has a slender, cormorant-like shape. Males have a more developed green crest; the breast is pale gray and marked, and the feet are red.
It dives in clear rapids to catch fish. The species is described as non-migratory and territorial along rivers.
An extinction-risk assessment has not been added yet.