पर समाप्त
खिलाड़ी प्रति टीम
प्रति चाल दिनों की संख्या
समकालिक गेमें
मूल्यांकित
पंजीकरण खुला
रेटिंग दायरा
स्वतः प्रारंभ
स्वरूप
Archerfish hunt by shooting jets of water at unsuspecting prey on leaves or twigs above, knocking them into the water below before gobbling them up. Now, a study finds that those fish are much more adaptable and skillful target-shooters than anyone had given them credit for. The fish really do use water as a tool making them the first known tool-using animal to adaptively change the hydrodynamic properties of a free jet of water.
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