Scientific Name
Chaetodon unimaculatus  
Chaetodon unimaculatus一點蝴蝶魚
by: Lab of Fish Ecol. and Evo., BRCAS
Author Bloch, 1787 Depth 1 - 25M
Chinese 一點蝴蝶魚 Poisonous Fish No 
Family_Chinese 蝴蝶魚科 Economic Fish No 
Family F393 Chaetodontidae Edible Fish No  Chinese In Mainland China 單斑蝴蝶魚 
Max Length 20 cm  Aquarium Fish Yes  Common Name 一點蝶、一點清、蝶仔(臺東)、紅司公(澎湖)、虱鬢(澎湖) 
Distribution in World India Ocean to Pacific Ocean   Distribution in Taiwan East、South、North、PonFu、ShaoLiuChew、LanI Is.、Greeb IS.、Tung Sa IS.、Nan Sa IS. 
Habitats Coral、Coastal、Lagoon  Holotype Locality East Indies 
Synonyms Chaetodon inimaculatus interruptus, Chaetodon interruptus, Chaetodon sphenospilus, Chaetodon unimaculatus interruptus   
Reference 臺灣魚類誌(沈等, 1993)  沈世傑 編 Shih-Chieh Shen ed. 1993 
Specimen List ASIZP0054881. ASIZP0057108. NMMBP02338. NMMBP05568. NMMSTP00779. NTMP0498. NTUM00551. NTUM00552. NTUM00554. NTUM00555. NTUM00556. NTUM00557. NTUM00674. NTUM00703. NTUM04812. NTUM08028. NTUM08037. ROM39395.  
Common Name One-spot butterfly; Onespot butterflyfish; Teardrop coralfish; Teardrop butterfly fish; Teardrop butterflyfish; Limespot butterflyfish 
Redlist Status NL Not in IUCN Redlist     
Characteristic Body oval, deep, strongly compressed. Head length roughly equal to head height; preopercle smooth, without prominent spines. Snout short. Small protractile mouth with brush-like teeth in the jaws. Dorsal fin with XIII spines, no notch between spinous and soft dorsal fin; and 21 to 23 soft rays; anal fin with III spines and 18 to 20 soft rays; pectoral fins transparent with 14 to 15 soft rays; pelvic fins with I stout spine and 5 branched rays; caudal fin rounded. Overall white with yellow median fins, except caudal fin transparent; a large black spot on back; a black bar through eye and narrower submarginal black bar posteriorly on dorsa; and anal fins, and also crossing caudal peduncle.
habitats Occur in small groups in reef flats, clear lagoon and seaward reefs. Feed on soft and hard corals, also on polychaetes, small crustaceans, and filamentous algae. In Indonesia, usually seen at moderate depths, usually swimming in small groups. Adults are m 
Distribution Widespread in the tropical Indo-Pacific from East Africa to the Hawaiian, Marquesan, and Ducie islands, north to southern Japan, south to the Lord Howe and Rapa islands; throughout Micronesia. Widely around coral reefs in Taiwan. 
Utility Marine aquarium fish.