Good Fish Guide
Your guide to sustainable seafood
You can play a key role in securing the future of our seas and marine wildlife by making more environmentally responsible choices when buying seafood.
Our seas face a wide range of threats. Climate change, pollution, habitat and biodiversity loss are all impacting our seas; plus 90% of global fish stocks are either fully or over-exploited. All these factors combined mean that urgent action is needed to restore the health of our seas. Fish farming (aquaculture) is rapidly expanding to meet increasing demand for seafood, but if this is done badly it can also damage the environment and exacerbate these other problems.
Use the Good Fish Guide to find out which fish are the most sustainable (Green rated), and which are the least sustainable (Red rated). Make the right choice and reduce your impact – every purchase matters! Find out more about our seafood work, including how we develop our seafood ratings, plus sustainable seafood recipes and more.
You searched for "crayfish or crawfish"
Crayfish or crawfish
Crayfish are eaten worldwide. Most are supplied from aquaculture. The major producers are China and the USA and the main species is the Red Swamp crayfish (Procambarus clarkii), which is native to the USA and has been introduced throughout
much of the world.
Red Swamp crayfish are farmed in both the US Southern States and China. Both countries farm them in agricultural ponds or rice paddies and their production does not require the use of feed or chemical inputs. In China escaped crayfish have caused ecosystem damage as they are an invasive species. US farmed red swamp crayfish is a sustainable farmed seafood choice. In Europe, native freshwater crayfish such as the noble crayfish (Astacus astacus) and the introduced signal crayfish (Pacifasticus leniusculus) are produced in semi-intensive systems. In the UK the only native species, white-clawed crayfish, is approaching extinction as a result of the introduction of American signal crayfish. Native (white-clawed) crayfish are a protected species and must not be trapped. It is illegal to handle them without a licence.