The fish that shoots down its prey with water bullets
This fish shoots its prey out of the air with a jet of water, like a living water gun.
Which one is REALLY true about the Archerfish?
The short version
The archerfish hunts insects above the water by spitting a precise, high-speed jet to knock them off branches. It automatically corrects for how light bends at the surface so it aims at the real target, learns to shoot by watching others, and can hit prey several body-lengths away.
Why it's so weird
- ✓The Archerfish shoots its out of the air with a high-speed jet of water, like a living water gun.
- ✓The Archerfish automatically corrects for how light bends at the water's surface, aiming at the real target instead of the illusion.
- ✓The Archerfish presses its tongue against a groove in the roof of its mouth to fire a powerful, focused jet.
- ✓The Archerfish fires a bigger, more powerful blast when the target is heavier.
- ✓The Archerfish can knock a bug clean off a branch from several body lengths away, and the young learn to shoot just by watching the adults.
You could line up about 4 of them along a 7-year-old!
The full story
This fish hunts by shooting its prey out of the air with a jet of water. Meet the archerfish, a living water gun with shockingly good aim. When it spots a bug sitting on a branch above the water, it presses its tongue against a groove in its mouth and fires a powerful, focused jet, knocking the insect clean off and into the water to be eaten. Here is the genius part. Light bends when it passes from air into water, so the bug is never actually where it appears to be. The archerfish does that physics automatically and aims for the real target, not the illusion. It can even pump out a bigger, more powerful blast when the target is heavier. Young ones even learn to shoot just by watching the adults practice. And it can nail a target several body lengths away. Follow for more weird animal facts.
An archerfish does not really "spit" — it works like a living squirt gun. It presses its tongue up against a long groove in the roof of its mouth, turning the two into a narrow tube, then snaps its gill flaps shut hard to force water through that tube. The jet is squeezed so the back moves faster than the front, so it gathers into a heavy water blob right before it smacks the bug. Because light bends as it crosses the water's surface, prey looks like it is in the wrong spot, but the fish is built to aim at the true position and sharpens its aim through practice, firing a stronger blast for a bigger, heavier target.
📚 Source: Denver Zoo Conservation Alliance — Archerfish ↗Scientists trained archerfish to hit a target, then blew a steady puff of air across the tank to push their water jets off-course, and careful measurements showed the fish missed at first but corrected their aim over several tries — evidence they fine-tune their shooting by learning, not by instinct alone.
📚 Source: eLife — The archerfish uses motor adaptation in shooting to correct for changing physical conditions ↗Watch the 45-second version
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“The Archerfish shoots its prey out of the air with a high-speed jet of water, like a living water gun.”
“The Archerfish glues the drained corpses of its victims onto its own back, building a tower of bodies taller than itself.”
“The Archerfish automatically corrects for how light bends at the water's surface, aiming at the real target instead of the illusion.”