Expert witnesses told the trial the fish died instantly

The goldfish were placed on display swimming in the blenders, and visitors were told they could press the "on" button if they wanted.

At least one visitor did, killing two goldfish.

Peter Meyer, director of the Trapholt Art Museum in Kolding, 200 kilometres (125 miles) west of Copenhagen, was fined for cruelty to animals after complaints from campaign group Friends of Animals.

It's a question of principle. An artist has the right to create works which defy our concept of what is right and what is wrong Peter Meyer Trapholt Art Museum

The fish were killed "instantly" and "humanely", said Judge Preben Bagger.

The court had earlier heard an expert witness from the blenders' maker, Moulinex, that the fish had probably died within one second of the blender being switched on.

A vet also told the court that the fish would have died painlessly.

Mr Meyer will not now have to pay the fine of 2,000 kroner (269 euros) originally imposed by Danish police.

The case only went to court because he refused to pay the police fine. He told the court that artistic freedom was at stake.

"It's a question of principle. An artist has the right to create works which defy our concept of what is right and what is wrong," he told the court in Kolding.

The display featured a total of 10 blenders containing goldfish.

After the complaints, the blenders were unplugged and the exhibit continued without the possibility of killing the fish.

It was a protest against what is going on in the world, against this cynicism, this brutality that impregnates the world in which we live Marco Evaristti Artist

Mr Evaristti said at the time he wanted to force people to "do battle with their conscience".

The idea, he said, was to "place people before a dilemma: to choose between life and death."

"It was a protest against what is going on in the world, against this cynicism, this brutality that impregnates the world in which we live," he said.