Definition of Colorado squawfish in US English:

Colorado squawfish

noun

  • A large North American cyprinid fish, Ptychocheilus lucius, which is native to the Colorado River basin (where it is now rare), having an elongated head and body and an olive green back. [This name is now often considered offensive.]

Origin

1940s; earliest use found in Louis S. Caine (b. 1896).