Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

Rainbow belly pipefish share an uncanny resemblance to seahorses. This is no coincidence. The species are related and similar ...

The tiny Amazon molly (Poecilia formosa) has always fascinated researchers because, according to the rules of evolution, it ...

Emperor cichlids, large fish native to Lake Tanganyika in Africa, don't like being stared at, especially if someone's gaze is ...

Fish may possess the ability to perceive where another being’s attention is focused. And they don’t like when it’s focused on ...

Amazon mollies don't need a man, and never will. A new study finds they can purge and repair genetic mutations that would ...

Scientists tracked mantis strike force from youth to adulthood, showing females eventually hit far harder than males. Why is ...

The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown.

ON ANY GIVEN weekend this summer, there will be a lionfish derby underway somewhere in Florida. As the population of this ...

Since ancient times, scientists and philosophers have pondered the fundamental question of what makes some organisms male and some female. Some hypotheses were at least plausible—Greek philosopher ...