In the second simulation, you've again stocked your pool with about one hundred guppies, but this time you start the test with an even mix of all four guppy types (brightest, bright, drab, and ...
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, ...
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