Pangasius, widely sold as basa fish in UK supermarkets, is farmed intensively in Vietnam with minimal welfare standards and significant environmental concerns.
Pangasius aquaculture in Vietnam represents some of the most intensive fish farming globally, with stocking densities far exceeding those considered welfare-acceptable for salmonids. While pangasius tolerate low oxygen levels better than many species, this physiological tolerance does not equate to welfare indifference to crowding. Research shows cortisol stress responses to handling and crowding in pangasius comparable to other farmed fish. The environmental pressures on Mekong River systems from pangasius effluent affect wild fish populations. Welfare standards for pangasius production are largely absent from major certification schemes. Budget seafood buyers in the UK may be unaware of the welfare and environmental context of the pangasius they purchase.