Sustainable fish can actually outperform conventional sources if you’re disciplined. The key numbers to track are yield per acre of marine acre, catch‑effort efficiency, and certification premiums. If you lock in a small‑scale, low‑impact fleet and invest in traceability tech, the margin lift can be 15–20 % above the industry average. The strategy is to keep the supply chain lean, lock in long‑term contracts with retailers who value carbon‑neutral labels, and use the certification as a pricing lever. Bottom line? The risk is in the volatility of catch and the cost of compliance, but the upside is a premium that can offset that if you keep the operational footprint tight.