Just nine months after Greenpeace launched its viral Traitor Joe’s attack, the organic-friendly grocery chain Trader Joe’s has promised to implement sustainable seafood policies.

Since Greenpeace started the campaign, Trader Joe’s has stopped selling orange roughy and red snapper — both “red list” fish that environmental groups urge consumers to avoid. Now, Trader Joe’s will put eco-friendly policies in place, with the goal of offering  only sustainable seafood in stores by the end of 2012.

To that end, Trader Joe’s will develop greener buying policies and better label its seafood to reflect the exact type of fish, its origin, and catch or production method. With those efforts, Trader Joe’s will likely receive a passing grade in Greenpeace’s next report, Carting Away the Oceans, which rates supermarkets based on sustainable seafood policies.

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