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Angler Matt Clark, 29, poses with his ‘winning’ fish, a 13oz bass, that he stole from an aquarium in St Peter Port, Guernesy (Credit: Greg Whitehead)

Angler Matt Clark, 29, poses with his 'winning' fish, a 13oz bass, that he stole from an aquarium in St Peter Port, Guernesy (Credit: Greg Whitehead)