The archer fish sets its sights above the water when in search of dinner.Found in rivers in India, Asia, and northern America, it has large eyes that face forward.through the water's surface it can spot insects perched on branches overhead.The fish shoots at these insects by using a groove in the roof of its mouth, and its tongue, which is long and thin at the front but thick and muscular at the back.Once it is within the spitting distance,the fish presses its tongue against the roof of its mouth ,turning the groove into a narrow tube,with the front of the tongue forming a valve.It jerks its gills covers shut and flick the tip of the tongue, sending up a jet of water.The jet knocks the insect off balance into the water.An adult fish can score a hit from 1.5m ,but young fish must learn to compensate for the distortion caused as light enters the water before they can strike with such accuracy.
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