The "flashier" a male guppy is, the more likely a female guppy ... Whatever the reasons, it is clear from the research of Endler and other evolutionary biologists that male guppies live in the ...

The need for GUPPY was made clear during World War Two, when German U-boats terrorized Allied shipping lanes and combat vessels. And while the submarine had been used consistently during World War ...

In four years (or about seven guppy generations), the brightest males ... the drabbest guppies make up 90 percent of the population, and it's clear that the brightest guppies' days are numbered.