Adding colorful tropical fish to your aquarium is a no-brainer if you love being mesmerized by beautiful colors and patterns. Many people, when they hear the word ‘fish’ think of dull grey fish or the ...

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 ...

Some pet tropical fish are naturally placid, while others are fearsome predators.

Ivan Nagelkerken receives funding from the Australian Research Council (ARC). Angus Mitchell and Chloe Hayes do not work for, consult, own shares in or receive funding from any company or organization ...