At least it does if you're a fish: A little fish that appears to enjoy homosexual relations with other males simultaneously increases their attractiveness to females, German researchers have discovered. A new study by scientists from the University of Frankfurt found the Shortfin molly – a popular fish for tropical aquariums – places a premium on sexual activity. Therefore a male engaging in homosexual behaviour can impress a female with his virility and fitness. “Sexual activity in itself is a sign of quality for females because sick or underfed males show little sexual behaviour,” said evolutionary biologist David Bierbach, adding this could possibly explain bisexuality in some other species as well. Publishing their findings in the British journal “Biology Letters,” the researchers picked the Shortfin molly because unlike many fish, insemination takes places inside the female, which bears its young live.
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