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Brighter, bolder, hotter: Why female guppies can't resist orange

Male guppies that glow with more orange aren’t just fashion-forward — they’re also significantly more sexually active. A UBC study reveals that brighter coloration is linked to virility and is genetically tied to brain development, suggesting a deeper evolutionary function. Researchers found that these bold hues aren't just for attracting mates, but are rooted in a vast, multi-chromosomal genetic system that enables tens of thousands of possible color pattern combinations. The work sheds light on how vibrant displays, behavior, and genetic fitness are intertwined in evolution.

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