John Duncan of the World Wildlife Fund gives practical tips for making sure you buy only SASSI-approved seafoodSustainable seafood can be an overwhelming subject. In a nutshell, what seafood can I eat? WWF's Southern African Sustainable Seafood Initiative provides an easy-to-use "traffic light" system that tells you which seafood can be eaten with a clear conscience (green list), which you should think twice about (orange list), and which should be avoided altogether because it is either considered unsustainable or illegal to sell in South Africa (red list).You can find the list on our pocket cards and website or download the SASSI app from the app store. Alternatively, you can use our FishMS service by just SMSing the name of the fish to 079-499-8795.What seafood should I avoid? Any illegally caught seafood, even if it's on the green list. Illegal seafood includes any caught without a commercial fishing right. Recreational fishers are not allowed to sell their catches, so make sure to avoid any seafood being sold on the side of the road, unless the seller can show you a legitimate commercial fishing right.Are there any under-appreciated fish we should be eating? There are some delicious and sustainable options that might awaken a new interest in seafood. Farmed mussels are one of the most sustainable options, sardines and anchovies are good choices, while snoek on the braai is delicious.Is it OK to buy farmed fish? Farming fish can also have environmental impacts. An example is mangrove destruction by prawn farms, which is why they are on the orange list. We have assessed all of the popular farmed species on our SASSI list to help provide consumers with advice on which are the good options.If there's one rule of thumb for selecting fish, what would it be? Stick to mussels or small and silver fish.What is the single best thing consumers can do to make a difference? Consumers have a really important role to play in demanding that their retailers and restaurants operate responsibly and commit to sustainability targets. Ask your supplier what they're doing about sustainable seafood and if they can't answer you, don't buy!For more info visit wwfsassi.co.za..