Supposing a dominant share of fish are consumed without the consumer giving much thought as to the origin of the fish (I guess so?), ‘wild caught’ fish risks to have a roughly similarly bad net impact as farmed: the fish impact becomes simply the ‘marginal extra fish’ the economy delivers (which I could imagine to be mostly farmed fish given more inelastic wild fish supply but I might be wrong).
Supposing a dominant share of fish are consumed without the consumer giving much thought as to the origin of the fish (I guess so?), ‘wild caught’ fish risks to have a roughly similarly bad net impact as farmed: the fish impact becomes simply the ‘marginal extra fish’ the economy delivers (which I could imagine to be mostly farmed fish given more inelastic wild fish supply but I might be wrong).