Scientific Name
Pygoplites diacanthus  
Pygoplites diacanthus雙棘甲尻魚
by: Lab of Fish Ecol. and Evo., BRCAS
Author (Boddaert, 1772) Depth 1 - 48M
Chinese 雙棘甲尻魚 Poisonous Fish No 
Family_Chinese 蓋刺魚科 Economic Fish No 
Family F394 Pomacanthidae Edible Fish No  Chinese In Mainland China 雙棘甲尻魚 
Max Length 25 cm  Aquarium Fish Yes  Common Name 皇帝、帝王神仙魚、錦紋蓋刺魚、蓋刺魚(臺東)、店窗(澎湖)、變身苦(澎湖)、崁鼠(澎湖) 
Distribution in World India Ocean to Pacific Ocean   Distribution in Taiwan East、South、North、ShaoLiuChew、LanI Is.、Greeb IS.、Tung Sa IS.、Nan Sa IS. 
Habitats Coral、Coastal、Lagoon  Holotype Locality Ambon I., Moluccas Is., Indonesia 
Synonyms Chaetodon diacanthus, Holacanthus diacanthus   
Reference 臺灣魚類誌(沈等, 1993)  沈世傑 編 Shih-Chieh Shen ed. 1993 
Specimen List ASIZP0054120. ASIZP0054143. ASIZP0055137. ASIZP0058139. ASIZP0058738. ASIZP0070114. ASIZP0076285. ASIZP0076286. ASIZP0076347. ASIZP0076348. ASIZP0076349. ASIZP0076350. ASIZP0076704. ASIZP0804415. ASIZP0914415. BPBMI23398. NMMBP01025. NMMBP06232. NMMSTP00055. NTMP0088. NTMP0513. NTUM00419. NTUM00420. NTUM00426. NTUM00428. NTUM00430. NTUM00431. NTUM00708. NTUM04800. NTUM04802. NTUM04803. NTUM04804. NTUM04805. NTUM08022.  
Common Name Royal angelfish; Royal empress angel; Royal empress angelfish; Regal angelfish; Regal angelfish pasific; Angelfish; Bluebanded angelfish; Empress angelfish 
Redlist Status NL Not in IUCN Redlist     
Characteristic Body moderately elongate, and strongly compressed. Preorbital bone convex and without strong spines. 1 prominent spines at angle of preopercle. Ventral edge of interopercle smooth. Eye moderately small. Mouth small, terminal, protractile, gape not extending to anterior rim or orbit. Dorsal fin with XIV spines and 17 or 18 soft rays; anal fin with III spines and 17-18 soft rays; caudal fin rounded. Body with alternating dark-edged bluish white and orange stripes which narrow and angle backward in dorsal fin; posterior portion of dorsal fin black with close-set blue dots; posterior portion of anal fin with alternating yellow and blue bands running parallel to body contour; caudal fin yellow. Juveniles with a large ocellated dark spot on basal portion of the soft dorsal fin.
habitats Occurs in coral rich areas of lagoon and seaward reefs to a depth of 48 m or more. Often found in the vicinity of caves and feeds on sponges and tunicates. Solitary or in pairs, or in groups. 
Distribution Distributed from the Red Sea throughout the Indian Ocean, eastward across the southern Pacific Ocean to the Tuamotu Archipelago, northward to the Ryukyu Islands. Widely around coral reefs in Taiwan. 
Utility Marine aquarium fish.