In mosquitofish, of the genus Gambusia, male fish are smaller than females—sometimes only half the size. Biologists had previously assumed that smaller male mosquitofish had at least some reproductive ...

The ocean is home to a vast array of different animals, each with its own traits. These include different forms of mating, such as parasitic mating. Parasitic mating occurs when the male physically ...

Japan is an island nation surrounded by the ocean. Fish are deeply familiar to us, yet they hold many mysteries and possibilities—from their ability to change sex depending on environmental conditions ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. This voice experience is generated by AI. Learn more. This ...

In mosquitofish, of the genus Gambusia, male fish are smaller than females -- sometimes only half the size. Biologists had previously assumed that smaller male mosquitofish had at least some ...