Polar fish experience lower mortality than tropical fish, allowing them to delay reproduction until later in life when they are larger and can produce more eggs, according to a study by Mariana ...

Pregnant fish can also get “baby brain" - just like human moms-to-be, according to a study. Pregnancy-related brain impairment is present in live-bearing fish, say scientists. Their research shows ...

It is slimy, mysterious, and one of Europe’s most enigmatic species: the eel. For centuries, researchers have tried to discover where and how these fish reproduce, but to this day, no one knows for ...