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

Here are our favorite types of freshwater fish you can keep as a pet. If you're in the throes of setting up a home aquarium, ...

Do you think that a saltwater tank is vital for keeping stunning, exotic fish? Reevaluate that idea. Freshwater aquariums are ...