Aquaculture Feed Dependency

Aquaculture feed dependency is the source’s claim that modern seafood supply increasingly depends on formulated feed rather than only wild catch. In 商业小样45 | 厄尔尼诺越大，鱼越贵, the shift matters because global aquaculture now supplies more than half of fish consumed by humans, making [[FishmealSupplyChain|fishmeal]] and fish oil more consequential than they were when aquaculture was a smaller industry.

The episode distinguishes partial substitution from independence. Salmon, shrimp, and other high-value farmed species can eat formulas with soy protein, rapeseed meal, pea protein, and many other ingredients, but the source says they still rely on fishmeal and fish oil for specific amino acids, digestibility, and Omega-3 nutrition. That makes feed formulation a constraint on seafood volume, quality, and price.

Key Claims

• Aquaculture growth can increase dependence on feed inputs even as it reduces dependence on wild-caught table fish.
• Lower fishmeal inclusion rates reduce but do not erase exposure to marine-origin feed inputs.
• High-value seafood categories are more exposed because feed quality affects growth, health, and final product quality.
• Feed shocks can reach consumers through smaller harvests, delayed growth cycles, or higher restaurant and retail seafood costs.

Connections

• Fishmeal Supply Chain - upstream commodity path.
• Peruvian Anchoveta / 鳀鱼 - fishery input behind the source’s feed story.
• Climate Food Price Transmission - how feed dependency turns climate shocks into prices.
• Restaurant Supply Chain Localization and Sushiro / 寿司郎 - downstream seafood supply and restaurant-chain context.
• Food Animal Welfare and Environmental Tradeoff Accounting - adjacent food-system concepts where animal production and ecological constraint are analyzed together.