The world has seven continents, but do you know the largest freshwater fish in each? These creatures show the incredible ...

The surprising answer -- given the notorious guillotine-like bite of the piranha -- is Brazil's massive Arapaima fish. The secret to Arapaima’s success lie in its intricately designed scales ...

Micro/nanostructure of fish scale and biomimetic fabrication and characterization. (a) arapaima giga; (b-d) micro/nanostructure of fish scale, three colored dotted lines represent three ...