Spit and it’s a kill. Archerfish are famous for shooting mouthfuls of water at insects to dislodge them from vegetation above the water.
New experiments show that they also use the jets to hunt underwater – disturbing sediment where prey is lurking and snapping up the spoils.
“Our study adds support to the view that archerfish use their jets as tools,” says study leader Stefan Schuster of the University of Bayreuth in Germany. “They’re not simple all-or-nothing events, but the jets can be adapted to serve both in aerial and underwater hunting.”
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https://www.newscientist.com/article/2118582-spitting-archerfish-shoot-at-prey-above-and-beneath-the-water/Short video at link
