Farm-Raised Salmon: Farm-raised fish is usually fed an unnatural diet of genetically engineered (GE) grains, antibiotics and chemicals unsafe for humans.To determine wild from farm-raised salmon (sold in most restaurants), wild sockeye gets its red color from natural astaxanthin and carotenoids. The white “fat strips” are thin, meaning it’s lean. Pale pink fish and wide fat marks are a sign of farmed salmon. Avoid “Atlantic Salmon” instead buy “Alaskan” or “sockeye,” which is illegal to farm and has very high astaxanthin concentrations. Banned in Australia and New Zealand.