Fish separated from their mate pine for each other and become pessimistic, scientists have found for the first time, challenging the belief that sexual emotional attachment is unique to humans.

When a male pufferfish decides it’s time to mate, he begins to build an elaborate sand structure on the ocean floor. Although the male fish are only about four inches long, they trace circles in ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. For any animal, releasing sperm cells requires a bit of time and ...

On average, the males were able to mate 19 times per day. The team was most interested in the amount and quality of the sperm after each of these matings. During the first three matings, the fish ...

This impacts reproduction due to the fact that groupers only reproduce at spawning events, when fish from a certain area congregate to find a mate at a specific location a handful of times per year.