Visit the National Oceanic and Atmospheric Administration's FishWatch website to familiarize yourself with general criteria for sustainable seafood.
Review consumer purchasing guidelines provided by non-profit organizations involved in seafood sustainability. Marine Stewardship Council, Monterey Bay Aquarium, and Greenpeace offer Fish to Eat, Seafood Watch, and Greenpeace International Seafood Red List, respectively.
Buy and eat sustainable fish based on your research. Seafood Watch recommends many fish as best choices, including: abalone (U.S. farmed); catfish (U.S. farmed); giant clam/geoduck (wild-caught); Caribbean spiny lobster (Florida); mussels (farmed); salmon (Alaska wild-caught); sea urchin roe (Canada); rainbow trout (farmed); and white seabass.