Perth, WA : Western Australian Museum vi 201 pp., 70 pls.īellwood, D.R. The Marine Fishes of North-Western Australia. Christmas Island : Christmas Island Natural History Association 2 edn, 284 pp.Īllen, G.R. Christmas Island Natural History Association, Christmas Island, Indian Ocean, 6798, Australia. Atoll Research Bulletin 412: 1-21.Īllen, G.R. Perth : Tropical Reef Research 3 vols, 1260 pp.Īllen, G.R. Perth : Western Australian Museum 292 pp. Marine Fishes of Tropical Australia and South-east Asia. Records of the Western Australian Museum, Supplement 44: 67-91Īllen, G.R. Fishes of Ashmore Reef and Cartier Island. Type locality: Java.īolbometopon muricatum (Valenciennes 1840) ReferencesĪllen, G.R. Scarus muricatus Valenciennes in Cuvier & Valenciennes 1840, Histoire Naturelle des Poissons Vol. Although once considered common or abundant throughout much of its range, the species is now considered to be rare in many areas, due primarily to fishing pressure in many parts of its range.Heavily fished in most parts of its range. Spawns in large schools on outer reefs during summer months. David Bellwood at James Cook University, Townsville, estimates that a large Bumpdhead Parrotfish may consume as much as 5 tonnes of reef in one year - creating tonnes of coral reef sand in the process. Individuals either bite off large chunks of coral with their powerful jaws and fused teeth, or use their large head to ram corals, breaking them into smaller pieces. Grows up to 1.5 m in length and 75 kg in weight.įeeds mostly on live corals, but also consumes benthic algae. Occurs in small to large aggregations on outer lagoon and seawards reefs, and will also forage on outer reef flats at low tide.ĭorsal fin IX, 10 Anal fin III, 9 Pectoral fin 16-17 Median predorsal scales 2-4 (may be obscured by hump).īody depth 2.0-2.5 in SL, depth increasing with growth head profile steep, adults with a prominent bump on forehead (evident at least 25 cm TL) teeth with nodules. Ningaloo Reef and offshore reefs of Western Australia, and the far northern Great Barrier Reef, and reefs in the Coral Sea, to the Swain Reef Group and Townshend Island, Queensland also the territories of Cocos (Keeling) Islands and Christmas Island in the Eastern Indian Ocean.Įlsewhere the species is widespread in the tropical Indo-West Pacific - from the Red Sea eastwards to French Polynesia, north to Taiwan, southern Japan, and Wake Island, south to northern Australia and New Caledonia. Bolbometopon muricatum (Valenciennes 1840) More Info
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