CHILOQUIN, Ore. — C’waam (Lost River sucker) and koptu (shortnose sucker) are two species of fish unique to Upper Klamath Basin, and both were once a plentiful food source for the Klamath Tribes. However, in the last 50 years, the population of these fish has been decimated from degradation of their habitat, the rivers they spawn in, and the lakes where they live.