A tropical fish that lives in mangrove swamps across the Americas can survive out of water for months at a time, similar to how animals adapted to land millions of years ago, a new study shows. The ...

Australia's tropical fish are heading south into cooler waters. These fish are not just visiting. They are settling into the milder "temperate" reefs that used to be too cold for them. As they do, ...

The Seaside Aquarium in Seaside, Ore., shared images of the fish on its Facebook page. In the photos, the large, brightly colored opah can be seen laying on the sand near the water’s edge. The ...

William Perry does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...