The Klamath largescale sucker (Catostomus snyderi) is a species of ray-finned fish in the family Catostomidae.
It is endemic to the Klamath River basin in northern California and southern Oregon, within the Western United States.
The International Game Fish Association all tackle world record for the species stands at 2 lb 11 oz from the Sprague River in Oregon, USA.[1]