Tilapia is one of the world's most farmed fish, with production exceeding 6 million tonnes annually. Welfare improvements in tilapia aquaculture offer large-scale benefits given the enormous numbers of individual fish involved.
The welfare of individual tilapia has received little regulatory attention despite their enormous numbers in production. Research demonstrates measurable stress responses to overcrowding, poor water quality, and noxious stimuli. Reducing stocking density and improving water oxygenation show clear welfare benefits without reducing profitability when disease rates and growth efficiency are considered. Consumer and certification pressure is the primary driver of welfare improvement in tilapia systems, as regulatory frameworks in major producing countries remain weak.