Scientific Name
Chaetodon ephippium  
Chaetodon ephippium鞍斑蝴蝶魚
by: Lab of Fish Ecol. and Evo., BRCAS
Author Cuvier, 1831 Depth 0 - 30M
Chinese 鞍斑蝴蝶魚 Poisonous Fish No 
Family_Chinese 蝴蝶魚科 Economic Fish No 
Family F393 Chaetodontidae Edible Fish No  Chinese In Mainland China 鞭蝴蝶魚 
Max Length 25 cm  Aquarium Fish Yes  Common Name 月光蝶、蝶仔(臺東)、紅司公(澎湖)、米統仔(澎湖) 
Distribution in World India Ocean to Pacific Ocean   Distribution in Taiwan East、West、South、North East、PonFu、ShaoLiuChew、LanI Is.、Greeb IS.、Tung Sa IS. 
Habitats Coral、Coastal、Lagoon  Holotype Locality Moluccas and Tahiti 
Synonyms Chaetodon garnoti, Chaetodon mulsanti, Chaetodon principalis   
Reference 臺灣魚類誌(沈等, 1993)  Cuvier, G. etc. 1831 沈世傑 編 Shih-Chieh Shen ed. 1993 
Specimen List ASIZP0054125. ASIZP0055265. ASIZP0057393. ASIZP0071542. FRIP00210. FRIP21355. NMMBP02114. NMMBP06351. NMNSF00100. NTUM00534. NTUM00535. NTUM00536. NTUM00537. NTUM00538. NTUM00539. NTUM00540. NTUM00541. NTUM00704. NTUM01416. NTUM04818. NTUM04820. NTUM04821. NTUM04827. NTUM08011.  
Common Name Saddle-back butterflyfish; Saddleback butterflyfish; Saddled butterflyfish; Saddle butterflyfish; Saddled coralfish; Blackblotch 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 to XIV spines, no notch between spinous and soft dorsal fin; and 21 to 24 soft rays; anal fin with III spines and 20 to 22 soft rays; pectoral fins transparent with 15 or 16 soft rays; pelvic fins with I stout spine and 5 branched rays; caudal fin rounded. Overall yellowish grey with a large black spot bordered below by a broad white band on the back, and wavy blue lines on the lower sides; a short narrow black bar through eye. Adults have a filament extending posteriorly from the upper part of the soft portion of the dorsal fin.
habitats Occur in lagoons and seaward reefs to a depth of 30 m, prefers coral-rich and clear water areas. Encountered singly, in pairs or small groups (adults often in pairs; juveniles solitary and inshore). Feed on filamentous algae, small invertebrates, coral po 
Distribution Commonly distributed in tropical and subtropical coastal waters of Indo-Pacific from Cocos-Keeling Islands to the Hawaiian, Marquesan and Tuamoto Islands, north to southern Japan, south to Rowley Shoals and New South Wales, Australia. Widely around coral  
Utility Marine aquarium fish.