It turns out the intrepid baby fish, no longer than a pinkie finger, explore multiple streams miles apart, traveling from river mouth to river mouth, in what amounts to a connected meta-nursery.

Why do our reef fish change color so often when they grow from a baby to adult? This mystery is just now being solved because there are so many people out in the water with cameras to document the ...

Eating plastics can harm adult fish by filling their stomachs with indigestible material, causing malnutrition, and by leaching toxins that can disrupt biological processes like hormone signaling.