Scientific Name
Naso tonganus  
Naso tonganus球吻鼻魚
by: ©Camrrubi, Jean-François
Author (Valenciennes, 1835) Depth 3 - 20M
Chinese 球吻鼻魚 Poisonous Fish No 
Family_Chinese 刺尾鯛科 Economic Fish Yes 
Family F470 Acanthuridae Edible Fish Yes  Chinese In Mainland China 球吻鼻魚 
Max Length 60 cm  Aquarium Fish Yes  Common Name 剝皮仔、打鐵婆、鬼角(臺東) 
Distribution in World India Ocean to Pacific Ocean   Distribution in Taiwan South、PonFu、LanI Is.、Greeb IS. 
Habitats Coral、Coastal  Holotype Locality Tongatabou 
Synonyms Acanthurus tuberosus, Cyphomycter tuberosus, Naseus tonganus, Naso tuberosus   
Reference 臺灣魚類誌(沈等, 1993);Fishes of the Great Barrier Reef and Coral Sea(Randall et al.,1990)  Cuvier, G. etc. 1835 Randall, J. E., G. R. Allen etc. 1990 沈世傑 編 Shih-Chieh Shen ed. 1993 
Specimen List ASIZP0059236. ASIZP0067629. FRIP21471. FRIP21879. NMMBP02387. NMMBP08546.  
Common Name Humpnose unicornfish 
Redlist Status NL Not in IUCN Redlist     
Characteristic Dorsal-fin rays V, 26-29 ; anal-fin rays II, 26-28 ; pectoral-fin rays 16-18 ; pelvic-fin rays I,3. Adults with an obtusely rounded protuberance on front of head not extend anterior to mouth even on largest individuals; two candal peduncular plates, the keel on each large with a forward-projecting point; caudal fin deeply emarginate in juveniles to slightly emarginate in adults; head and dorsal part of body gray with scattered small plate blotches and numerous. Body gray, head and dorsal part scattered with small pale blotches and numberous small black spots, with a ventral extension of small black spots beneath outer part of pectoral fin; ventral half of body pale gray to white, a large blackish spot below and in front of pectoral fin base.
habitats A coral-reef species found in coastal to outer reef, usually at moderate depth in reef channels subject to strong currents, or around rocky outcrops along shores. Feed mainly on leafy or fleshy algae, but also on zooplankton when abundant. Occur as solita 
Distribution Western Indian Ocean: Mauritius, Seychelles, and Mozambique. Probably more wide-ranging. Taiwan: Lanyu, Lyudao.  
Utility Commercial fishery and aquarium species.