Iran wetlands are approximately 1853762ha and between Middle East wetland was contained 25 % . Shadegan Wetland in Khuzestan province is one of the 18 international wetlands registered on UNESCO's Natural Heritage List. Located 52 km from Abadan and 105 km from Ahvaz, it is Iran's largest wetland and by Linking Jarahi River connect with Persian Gulf waters, the wetland is considered one of the most wonderful natural landscape of the world because of it is unique biodiversity. In 2006, fish landings in shadegan wetland reached a peak of 3700 tons, which corresponds to more than 10 billion$ ....