When we talk about sustainable fishing, we are referring to a series of practices aimed at keeping the population of marine species at optimal levels to ensure survival, thus respecting the natural environment. In particular, sustainable fishing is based on fishing techniques that do not have a negative impact on other inhabitants of the ecosystem. Sustainable fishing is essential, as our seas and oceans are threatened by overexploitation and consumption of specimens below the minimum sizes.the most importance of fishing it participate the development of the nations as we are Somaliland we had so plenty of fishes in our ocean it could alternatives to meat of animal due frequently of droughts in the country Moreover, fish and other marine products are rich in proteins which help in bodybuilding or replace worn-out tissues. Their fat provides energy and forms a valuable source of reserve food for the human body. Many essential minerals are found in fish including iron, calcium, iodine, copper, magnesium and phosphorus, in relatively greater proportions than in many other foods. Fish-liver oils, e.g. codliver oil, are a very rich source of vitamins A and D. In fact, almost three-quarters of the total fish catch is used for food, whether fresh or processed Fishing is an important economic activity which provides food from the sea and thereby creates employment not only for whoever (the fishermen) directly collects that food (fish, crustaceans, molluscs) but also for those who operate in the entire chain, from the construction of vessels and equipment supplies related to the marketing of products , The fishing sector contributes to development and growth in many countries, playing an important role for food security and nutrition, poverty reduction, employment, economic development and trade, overfishing is a serious threat to the fish in our sea. There are many species of fish which simply need to remain in the sea, they are not necessary for food security or their lives are not suitable for captivity, yet the Food and Agriculture Organization have estimated that over 50% of species of marine fish have been fully or over-exploited. By overfishing, we are destroying entire ecosystems and the food chains which are essential to keep them thriving. Not only is overfishing wiping entire species out, it’s also having a direct impact on other species in the food web. Some of the methods used for fishing are destructive in themselves, such as bottom trawling which destroys habitats and captures many fish which are not even wanted, and then tossed aside.