University of Stirling’s Institute of Aquaculture has admitted culling thousands of the animals after experimental work was put on hold amid the coronavirus pandemic last year.The university revealed the mass cull came in 2020, when it used more than 12,000 live fish in its “vital” quest to tackle issues like food security and conservation.But the figures, revealed in a Freedom of Information request, were branded “disappointing” by activists campaigning for an end to all animal testing in