After netting about 900 trapped fish, biologists moved them upstream to an ice-free area of the Snake River in Grand Teton ...

At the base of the Grand Teton Mountain range, a new fish species tinged with green was identified as separate from its blue brethren.

They're billed as one of the most abundant migratory fish species in the Great Lakes.Every year, suckers make their way up ...

The razorback sucker is a large, warm-water fish native to the Colorado River basin. Construction of more than a dozen dams throughout the lower basin has left little natural habitat for the fish and ...