Female seahorses cheat on their mate when they can no longer smell him

Lined seahorses, one male one female, clinging to algae Shane Gross/naturepl.com
Monogamous female seahorses cheat on their male partners when they can’t smell them any more.
“Seahorses can express incredible loyalty affection once a pair has bonded during the reproductive season,” says Dong Zhang at the Chinese Academy of Fishery Sciences in Shanghai.
The curvy-tailed couples usually stay together for months or years. They live within a few metres of each other meet up at daylight for “morning greetings” that reinforce their bond – swimming in parallel, brightening their …