Fish 'see' in the dark using electric sensors

SCIENTISTS HAVE discovered that some fish can use electric fields to detect their prey in total darkness - a finding that raises the possibility of developing a device to locate objects in murky water.

Elephant fish, which generate weak electric fields, use electricity to judge the distances of nearby objects as accurately as if they had binocular vision. The fish, which have elongated lower jaws which looks like an elephant's trunk, live a nocturnal existence in freshwater African streams and find their way around almost exclusively with the help of the electric fields generated by…