Some male fish use their tails to fan rivals’ sperm away from eggs

To boost their chances of fertilising a nest-load of eggs, male dusky frillgoby fish use their tailfin to fan away the sperm deposited by rivals

Source:
https://www.newscientist.com/article/2257736-some-male-fish-use-their-tails-to-fan-rivals-sperm-away-from-eggs/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home