Shark Bay (26°08'S) to Dampier Archipelago (20°28'S), WA, also Rowley Shoals (17°20'S) and Scott Reef (14°03'S), WA, Ashmore Reef, Timor Sea (12°15'S) and Portlock Reef, Coral Sea (9°35'11"S, 144°48'37"E) to Port Stephens, NSW (32°40'S), also Lord Howe Island, Christmas Island and Cocos (Keeling) Islands; tropical, Indo-west-central Pacific.
Lord Howe Province (14), Timor Province (2), Cape Province (20), Cocos (Keeling) Island Province (22), Christmas Island Province (23), Northwest Shelf Province (27), Central Western Shelf Transition (28), Central Western Shelf Province (29), Northwest Transition (3), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)
Body oval, deep, strongly compressed. Preorbital bone convex and without strong spines. 1 prominent spines at angle of preopercle. Ventral edge of interopercle serrated. Eye moderately small. Mouth small, terminal, protractile, gape not extending to anterior rim or orbit. Scale on middle of body with focus before or just on anterior margin of exposed portion. Dorsal fin with XIII spines and 19-21 soft rays, and posterior corner of dorsal fin pointed and elongated posteriorly in adults; anal fin with III spines and 20 soft rays; caudal fin rounded. Juveniles are bluish black with concentric white circles. Adults blue with close-set horizontal yellow stripes on the sides and the adjoining dorsal and anal fins. Snout and cheek bluish white; eye enclosed in a black vertical bar with blue edge; pectoral fin base area also black.
Juveniles are encountered under ledges, or in holes of outer lagoon patch reefs or semi-protected areas of exposed channels and outer reef flats. Subadults move to reef front holes and surge channels. Large adults inhabit ledges and caves in areas of rich
Widely distributed in Indo-Pacific from. It is mainly found in eastern and southern Taiwanese waters.
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Pomacanthus&speciesname=imperator ---> https://www.fishbase.in/Summary/speciesSummary.php?genusname=Pomacanthus&speciesname=imperator https://www.fishbase.in/Summary/speciesSummary.php?genusname=Pomacanthus&speciesname=imperator ---> https://www.fishbase.in/summary/Pomacanthus-imperator.html
Indo-Pacific: Red Sea and East Africa to the Hawaiian, Line and Tuamoto islands, north to southern Japan and the Ogasawara Islands, south to the Great Barrier Reef, New Caledonia, and the Austral Islands (Ref.
). Not found in Easter Island, Rapa and the Marquesan Islands (Ref.
Size / Weight / Age
range ? - ? cm
Max length : 40.0 cm SL male/unsexed; (Ref.
); max. reported age: 14 years (Ref.
Juveniles are encountered under ledges, or in holes of outer lagoon patch reefs or semi-protected areas of exposed channels and outer reef flats. Subadults move to reef front holes and surge channels. Large adults inhabit ledges and caves in areas of rich coral growth on clear lagoon, channel, or seaward reefs (Ref.
). Benthopelagic (Ref.
). Feed on sponges and other encrusting organisms (Ref.
); also on tunicates. Form pairs. Young and adults may clean much larger fishes such as sunfish (Ref.
). Frequently exported through the aquarium trade. Juveniles are distinguished by a white dorsal-fin margin (Ref.
Preferred temperature (Ref.
): 24.6 - 29, mean 27.9 (based on 1496 cells).
Phylogenetic diversity index (Ref.
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.04677 (0.02590 - 0.08448), b=2.89 (2.73 - 3.05), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref.
Trophic Level (Ref.
): 2.7 ±0.00 se; Based on food items.
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
): High to very high vulnerability (68 of 100) .
Price category (Ref.
Agustin, Liza Q.
Ortañez, Auda Kareen
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