A study reveals that sticklebacks with complete bony plates have survival rates several percentage points higher than those with reduced plates, indicating ongoing natural selection. Moreover, the ...

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.

Fish represent one of the most diverse groups of vertebrates, exhibiting a wide array of physiological adaptations that have enabled them to colonise nearly every aquatic habitat on Earth. Central to ...

An international team led by scientists from the Canadian Museum of Nature and the University of Chicago reconstructed the brain, heart, and fins of an extinct fish called Norselaspis glacialis from a ...