Accumulating evidence that fish experience pain has prompted a reevaluation of fish welfare standards, though the science remains contested and implementation lags behind the evidence.
The question of fish pain is no longer scientifically settled in the negative — the evidence for nociception and behavioral pain responses is substantial. The implication is that the welfare of trillions of farmed and wild-caught fish deserves genuine consideration. Standard practices including live chilling, gill cutting, and high-density crowding all become welfare issues under a fish sentience framework.