By Megan Wilde
Last fall in Big Bend National Park, a bucket brigade of biologists plunked thousands of Rio Grande silvery minnows into their namesake river. This endangered species disappeared from Texas about fifty years ago. But since 2008, the U.S. Fish and Wildlife Service has released more than a million silvery minnows into the Rio Grande’s Big Bend reach. Rare fish can't be created out of thin air though. So where did these bucketsful of minnows come from?
