When saltwater fish long ago evolved to live in fresh water, many of them also evolved a more sophisticated hearing system, including middle ear bones similar to those in humans. Two-thirds of all ...

The interplay between hydraulic structures and fish passage is a critical research area, particularly as engineered barriers such as dams and turbine installations disrupt natural river connectivity.

Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.