A new study of wild guppies could unsettle a decades-old idea about the role of danger in the evolution of aging. Biologists in the 1950s predicted that in a treacherous habitat, creatures would ...

A properly dressed male guppy, with its gaudy blue spots and brilliant splashes of orange, can't help but stand out. But for a fish that spends its life swimming among predators, it seems that good ...

A new study demonstrates a female preference for rare males using an experiment in a wild population, rather than a laboratory setting. When it comes to choosing a mate, female guppies don't care ...

Grouping provides many potential benefits to individuals in terms of foraging and anti-predator protection. However, it has been suggested that individuals could gain additional benefits in terms of ...

Genomic DNA was extracted from caudal finclips using the HotShot method (Truett et al, 2000). We screened four guppies of the Green strain, five guppies of Red strain, five guppies of the Blue strain, ...

Any owner of a freshwater aquarium likely has had guppies (Poecilia reticulata), those small brightly colored fish with a propensity for breeding. Now guppy populations manipulated in natural habitats ...

Pet guppies often jump out of their tanks. One such accident inspired a new study which reveals how guppies are able to jump so far, and suggests why they do it. If you've owned a pet guppy, you know ...

Their brightly-coloured skin and beautiful fins have made them a favourite pet. But woe betide anyone who releases their guppy fish into the wild for these tropical creatures can upset the other ...

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 ...

TALLAHASSEE, Fla. — When it comes to choosing a mate, female guppies don't care about who is fairest. All that matters is who is rarest. Florida State University Professor Kimberly A. Hughes in the ...