Breeding breakthrough paves way for controversial tuna farming on land

Spanish research centre achieves first tank-bred Atlantic bluefin as NGOs warn of poor welfare, more antibiotic use and water pollution

The first successful breeding of Atlantic bluefin tuna at a Spanish research centre has spurred at least two companies to ramp up plans for the industrial farming of land-bred tuna.

The companies would be the first to use only tank-bred Atlantic bluefin stocks of fertilised eggs or young tuna. Up to now, farming of Atlantic bluefin has relied on catching young wild fish and fattening them in open-sea cages.