 These mangroves are important nursery grounds for nearly all major angling fish including yellowfin bream ("Acanthopagrus australis"), flat-tail sea-mullet ("Liza argentea"), luderick ("Girella tricuspidata") and sand whiting ("Sillago ciliata") which are caught in adjoining waters as adults, mangroves also provide rich organic matter to the Port Hacking Estuary by fixing carbon into the river system through the addition of leaves into the thick rich black mud.Many crustacean and mollusc species rely on mangroves as a source of food whether by providing foraging through leaf litter, mud or direct predation of the mangrove trees and seeds.Soldier crabs ("Mictyris longicarpus"), semaphore crab ("Heloecius cordiformis"), blue swimmer crabs ("Portunus pelagicus") and hermit crabs ("Pagurus sinuatus") also call the mangroves home.