Despite the importance of mangroves as nursery area for life history of fishes, researches on the early stages of fishes and their biology and ecology in the Red Sea are very rare. Moreover, information on the distribution of juvenile fishes of the coral reef in the Red Sea is almost lacking. However, Ahmed (1992) studied the distribution, growth, feeding, species composition and abundance of the juvenile in the Gulf of Aqaba. Therefore, this study aims to determine the composition of juvenile fish communities inhabiting mangrove swamps in the Egyptian Red Sea, to evaluate the importance of these swamps as nursery areas for the economically important fishes and how mangroves could support the life history of reef fishes.