Learn visual and behavioral cues to distinguish male from female bettas. Reviewed by Nick Saint-Erne Male bettas often have more vivid colors and longer fins compared to females. Females can display ...

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, ...

I receive funding from The Australian Research Council. It’s not always easy to tell if a fish is male or female: they look more or less the same. But there are exceptions, such as guppies and, as ...

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 ...

Animal sexual reproduction can involve males attempting to entice or force females to mate with them, even if they are not initially interested.This male behavior is driven by conflicts of interest ...

Striking traits seen only in males of some species - such as colorful peacock feathers or butterfly wings - are partly explained by gene behavior, research suggests. The findings aid understanding of ...

Guppies have been a separate species for 500,000 years, and during that time their color has changed drastically. But one thing has stayed the same: an orange patch on males. This is quite possibly ...

image: Male guppies exposed to predators in the wild or in captivity have heavier brains than those living in relatively predator-free conditions, according to new research published in the journal ...

Male guppies continue to reproduce for at least ten months after they die, living on as stored sperm in females, who have much longer lifespans. "Populations that are too small can go extinct because ...

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.

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 ...

During mating season, male guppies either will woo females with their shiny coats or they will harass the smaller females into mating by using nipping and chasing behaviors. Earlier research found ...