 Notable, is the speckled longfin eel ("Anguilla reinhardtii"), which breeds in the ocean with the juveniles eventually returning to the Apsley–Macleay River system.Twelve species listed as threatened under the Threatened Species Conservation Act 1995 are found in the wilderness area.There are five mammals (brush-tailed phascogale, brush-tailed rock wallaby, koala, squirrel glider and tiger quoll); four birds (glossy black cockatoo, greater sooty owl, superb fruit-dove and turquoise parrot); one reptile ("Morelia spilota variegata" (carpet python)); and two frogs ("Litoria piperata" and "Litoria subglandulosa").