Male guppies sporting a tad more orange on one side of their bodies than on the other tend to flash that better side at females.
That’s the conclusion of a new study of asymmetric male guppies flirting with females in adjoining tanks, says Mart R.
Skip to content
BOTH SIDES NOW. A male guppy shows slight differences between the alluring orange patches on either side of his body. Gross and H.Y. Suk