An international team of biologists, led by Wageningen University & Research, has demonstrated that predators have a direct ...

As anyone who owns guppies knows, the little fishes are quite the jumpers. But why would evolution favor jumping behavior in an aquatic animal? Guppies don't eat anything outside the water. A new ...

Guppy via Shutterstock In case you have ever doubted it, girl guppies are really smart - and now we have scientific proof. A recent study from the universities of Exeter and Copenhagen examined the ...

When evolutionary biologist John Endler began studying Trinidad's wild guppies in the 1970s, he was struck by the wide variation among guppies from different streams, even among guppies living in ...

Best girlfriends might never let a man come between them — unless they're Trinidadian guppies. Among these fish, the presence of a harassing male can disrupt female social networks, causing ...

After death, male guppies can keep on siring offspring because females store sperm for so long. As a result, a living male in a stream in Trinidad can end up competing with long-gone fish from his ...

Guppies in large groups cooperate more frequently in an experimental test of the group size paradox. Proceedings of the Royal Society B: Biological Sciences , 2023; 290 (2002) DOI: 10.1098/rspb ...

Tiny fish called Trinidadian guppies have individual 'personalities', new research shows. Scientists from the University of Exeter studied how guppies behaved in various situations, and found ...

After maintaining your simulation pool for only one year, you find a significant decline in the number of moderately colored guppies. The brightest males and drabbest males are still faring pretty ...

Female guppies take male harassment out on other females. When male harassment starts getting to female guppies, they end up taking their frustrations out on other females. Researchers have found ...