Story perspectives

Endangered Sonoyta Pupfish Released to Prevent Extinction

10/26/2025

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Summary

Story summary

University of Arizona's Biosphere 2 released 48 critically endangered Sonoyta pupfish into a stream habitat that mimics natural conditions.
The Sonoyta pupfish now exist only in Quitobaquito Springs, Arizona.
The release is part of a Safe Harbor agreement with U.S. Fish and Wildlife Service and Arizona Game and Fish.
Pupfish specialist Brett Montgomery says refuge populations prevent extinction.
Future plans include introducing endangered Gila topminnow into the same habitat.

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Story summary

University of Arizona's Biosphere 2 released 48 critically endangered Sonoyta pupfish into a stream habitat that mimics natural conditions.
The Sonoyta pupfish now exist only in Quitobaquito Springs, Arizona.
The release is part of a Safe Harbor agreement with U.S. Fish and Wildlife Service and Arizona Game and Fish.
Pupfish specialist Brett Montgomery says refuge populations prevent extinction.
Future plans include introducing endangered Gila topminnow into the same habitat.