In the swim with an eye on the clock

Fish can tell the time

source: Kirsty Scott
Guardian October 1 2003 p13

Plymouth University psychologist, Phil Gee, has trained fish to hit a lever a a specific time to obtain food. The fish also pressed the lever when they were not fed, until the time to feed them had elapsed. Fish appear able to adapt and learn, as well as tell the time. This research could help fish farmers who could train fish to come to a particular spot for feeding at a particular time. Norwegian research has found that fish can be trained to come to a spot in a fjord, in response to a sound.