Ceratonova shasta

Deadly Parasite Ceratonova Shasta Devastates Chinook Salmon in Klamath River

A parasite outbreak of Ceratonova shasta in the Klamath River, spanning California and Oregon, is killing large numbers of Chinook salmon. Experts attribute the severity to record-low snowpack, warmer water, and the parasite's rapid maturation, despite fish typically dying before the parasite can fully develop.