#Lefties and righties: Asymmetry in fish genitalia
“#Lefties and righties: Asymmetry in fish genitalia” Credit: Pixabay/CC0 Public Domain Evolutionary biologists from the University of Konstanz have resolved a century-old question regarding the asymmetric genitals of internally fertilizing fishes of the family Anablepidae. Surprisingly, the direction of genital asymmetry in these fishes is random rather than hereditary. Four-eyed fishes of the genus Anableps…