Kingdom Animalia  
 Phylum Chordata  
 Class Actinopterygii  
 Order Perciformes  
 Family Chaetodontidae  
 Genus Chaetodon  
  Chaetodon semeion  Bleeker, 1855 
Provider: Kwang-Tsao Shao 
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Synonyms:Chaetodon decoratus  details
Citation: 臺灣魚類誌(沈等, 1993)
Character: 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 to XIV spines, no notch between spinous and soft dorsal fin; and 23 to 26 soft rays; anal fin with III spines and 19 to 22 soft rays; pectoral fins transparent with 14or 15 soft rays; pelvic fins with I stout spine and 5 branched rays; caudal fin rounded. Golden yellow; base of the posterior portions of the dorsal and anal fins black; a prominent vertical black bar running across the eye; diagonal rows of black dots on the sides. A filament originating from the soft portions of the dorsal fin rays trails posteriorly. 
Habitat: Uncommon species found in coral rich areas of clear water lagoon and semi-protected seaward reefs at depths of 5 to 25 m. Usually in pairs or small groups, more wary than most species. Oviparous. 
Distribution: Distributed from the Maldive Islands eastward throughout the Indo-Malayan region and tropical western and southern Pacific Ocean. Known only found in Lanyu, southeastern Taiwan. 
Utility: Marine aquarium fish.  
Name Code: 381596
  IUCN Red List:LC      Marine     
Suggested Link    The Fish Database of Taiwan  FishBase  Discover Life  World Register of Marine Species (WoRMS) 
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