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Nilus sp
Saw this Spider 'floating' on the surface of a stagnant pool along a stream, hunting small fishes or fish fries. They hunt by waiting at the edge of a pool or stream (this one was walking on water), then when they detect the ripples from prey, they run across the surface to subdue it using their foremost legs, which are tipped with small claws; like other spiders they then inject venom with their hollow jaws to kill and digest the prey. They mainly eat insects, but some larger species are able to catch small fish. They can also climb beneath the water, when they become encased in a silvery film of air.
Tropical forest, along or near stream/river.
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