Orange male guppies are hornier

Breakthroughs, discoveries, and DIY tips sent every weekday. For guppies (Poecilia reticulata) getting ready to mate, the color orange speaks volumes. The more orange coloration on a male guppy, the more virile it is, according to a study recently published in the journal Nature Ecology and Evolution. The research dives into the evolutionary mystery of why male fish have such vibrant and bold colors and patterns. Throughout the animal kingdom, bright colors are used as a visual signal.