Canadian evolutionary scientists say claws are used by the male guppy fish to treble the amount of sperm transferred to reluctant females Added the species has evolved to benefit males at the expense ...

NEWPORT NEWS, VA.? There’s no coat to brush and fluff. No nails to clip, or teeth to brush. Forget obedience training because they don’t respond to verbal commands. A Half Black AOC male guppy is ...

The more colorful males were up to two times more sexually active than other guppies. By Laura Baisas Published Jul 10, 2025 3:00 PM EDT Get the Popular Science daily newsletter💡 Breakthroughs, ...

Some males will go to great lengths to pursue a female and take extreme measures to hold on once they find one that interests them, even if that affection is unrequited. New research from evolutionary ...

Among these fish, the presence of a harassing male can disrupt female social networks, causing female-against-female aggression, new research indicates. During mating season, male guppies either will ...

For male Trinidad Guppies applies: if you are hungry, seek female company. A recent study provides evidence that male guppy fish in the presence of females more often ended up at novel food patches.

When male guppies fail to win over females with their good looks and dance moves, they turn to another, more aggressive set of tools: claws on the tips of their genitalia. Biologists have long ...

Male guppies have an extraordinary diversity of colors. They found that the more colorful males were up to two times more sexually active, performing for females for longer periods of time and at a ...

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 ...