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The Fish Who Knows When It's Time to Eat

BentleyBentley, a giant six-year-old Humphead Wrasse, has been trained to respond to a sound made by banging on the gate of a small enclosure just off his main swimming tank. Even after a gap of four months, the fish remembered exactly what to do to be fed on hearing the sound.

The idea is to train Bentley, which is about 3ft long and still only half grown, to enter a special holding pool at the National Marine Aquarium in Plymouth at meal times.

The method also means it can be summoned by aquarium staff when it needs medical examinations.

Source: Telegraph
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