Whitney Pipkin, The Washington Post, WashingtonPost.com, 18 April 2014 — Still have farmed salmon crossed off your short list of eco-friendly fish? A local version that’s available for a limited time in the Washington area could temporarily rewrite your rules. Most farmed salmon are raised in open nets or pens in the ocean, where their waste and potential to introduce parasites, diseases or non-native fish to the wild present serious environmental concerns. The Freshwater Institute, a program of the Arlington-based Conservation Fund, has been trying another way.