For the first time in 30 years, the Missouri Department of Conservation has confirmed evidence that the state-endangered lake sturgeon is reproducing in the wild. Sam Hardy and Kristin Biagioli ...

As many as 60 percent of the world’s fish species could struggle to breed and reproduce if climate change causes the Earth to warm by 5 degrees Celsius over the next 80 years, the current projection ...

Colorado Parks and Wildlife (CPW) has announced that the greenback cutthroat trout is naturally reproducing in the state after more than 10 years of rescue efforts to stop it from going extinct. The ...

DENVER (KDVR) — Eight years after crews saved a rare fish from a wildfire, biologists are seeing their work pay off. Colorado Parks and Wildlife said that during the Hayden Creek Fire, which burned ...

Polar fish experience lower mortality than tropical fish, allowing them to delay reproduction until later in life when they are larger and can produce more eggs, according to a study by Mariana ...