Population Trends
The Yaqui Catfish survived in San Bernardino Creek until spring flows diminished because of groundwater pumping causing the creek dried up. The remaining habitat at San Bernardino Creek was severely trampled by livestock, making it uninhabitable. The catfish were introduced in 1899 into the Santa Cruz River System (in reservoir fed by Monkey Spring) where they persisted until the 1950s. A small population of 350 fish has been re-introduced into the Rio Yaqui on the Northern most portion of the San Bernardino National Wildlife Refuge in November 1997, however outside of the San Bernardino refuge the Yaqui Catfish have become extinct from United States waters.
Read more about this topic: Bagre De Yaqui
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—George Orwell (1903–1950)