Also the LA Times article:
Skuna Bay thinks that salmon should eat fish (as they do naturally). However, it takes 5.5 pounds of fish to produce 2.2 pounds of farmed salmon.
In Chile, the ratio can go has high 8 to 1, which is rapidly depleting our fish population. To reduce pressure on wild fish stocks, Skuna therefore uses roughly one-quarter fish to other ingredients that are plant-based.
