Scientific Name
Chaetodon nippon  
Chaetodon nippon日本蝴蝶魚
by: Lab of Fish Ecol. and Evo., BRCAS
Author Steindachner, 1883 Depth 1 - 30M
Chinese 日本蝴蝶魚 Poisonous Fish No 
Family_Chinese 蝴蝶魚科 Economic Fish No 
Family F393 Chaetodontidae Edible Fish No  Chinese In Mainland China 日本蝴蝶魚 
Max Length 17 cm  Aquarium Fish Yes  Common Name 暗帶蝶 
Distribution in World Australia   Distribution in Taiwan North 
Habitats Coral、Coastal  Holotype Locality Tokyo, Japan 
Synonyms Chaetodon carens, Chaetodon decipiens   
Reference 臺灣魚類誌(沈等, 1993)  Steindachner, F. etc. 1883 Suzuki, K. etc. 1980 沈世傑 編 Shih-Chieh Shen ed. 1993 
Specimen List ASIZP0060381. NTUM02704.  
Common Name Japanese butterflyfish 
Redlist Status NL Not in IUCN Redlist     
Characteristic Body oval, deep, strongly compressed. Head length about equal to head height; preopercle smooth, without prominent spines. Snout short. Small protractile mouth with brush-like teeth in the jaws. Dorsal fin with XII spines, no notch between spinous and soft dorsal fin; and 23 or 24 soft rays; anal fin with III spines and 18 to 20 soft rays; pectoral fins transparent with 16 soft rays; pelvic fins with I stout spine and 5 branched rays; caudal fin rounded to slightly emarginate. Body yellowish white, with brown region posteriorly; No vertical dark band above eye, but present in young. The dorsal, caudal, anal and pelvic fins yellow to light brown, the posterior portion of caudal fin transparent.
habitats Inhabits rocky reefs at depths of 5 to 20 m. Feeds on crabs, worms, and other invertebrates; forms small to large aggregations. Spawning occurs in groups at sunset when water temperature is 23°C. 
Distribution Known only in the Western Pacific from Philippines north to Japan and Korea. It is found in northern Taiwanese waters. 
Utility Marine aquarium fish.