Antibiotic use in aquaculture reflects underlying welfare problems. Reducing use through welfare improvement aligns fish welfare with antimicrobial resistance public health goals.
Aquaculture antibiotic stewardship and welfare are causally connected - high antibiotic use indicates high disease burden caused by poor welfare conditions. Addressing welfare reduces antibiotic need, which reduces resistance risk. Norway's success in eliminating most antibiotic use through vaccination demonstrates that welfare-based approaches achieve both animal welfare and public health goals.