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Blue Backed Angelfish

Centropyge venusta (Yasuda & Tominaga 1969)

Diagnostic Description

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Description: Head and body dorsally blue, ventral yellow with triangular extension to behind head. Body depth 1.9-2.2 in SL. Scales longitudinal series 46-48 (Ref. 90102).
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Rodolfo B. Reyes
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Morphology

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Dorsal spines (total): 14; Dorsal soft rays (total): 16; Analspines: 3; Analsoft rays: 15
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Trophic Strategy

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In caves or other projections (Ref. 9137). Inhabits steep outer reef slopes (Ref. 9710); in ledges and caves (Ref. 48391) or other projections (Ref. 9137) . Shy and not easily approached at close range (Ref. 4537). Usually observed singly, almost always upside down in reef caves (Ref. 47838); but also forms pairs or small groups (Ref. 48391). Natural diet unknown (Ref. 48391).
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Drina Sta. Iglesia
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Biology

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Inhabits steep outer reef slopes (Ref. 9710); in ledges and caves (Ref. 48391). A shy species, not easily approached at close range (Ref. 4537). Usually observed singly, almost always upside down in reef caves (Ref. 47838); also forms pairs or small groups (Ref. 48391). Natural diet unknown (Ref. 48391). Sometimes forms hybrids with Centropyge multifasciata (Ref. 48391). Occasionally exported through the aquarium trade.
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Importance

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aquarium: commercial
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分布

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分布於西太平洋區,由日本至菲律賓北部。台灣產於綠島及蘭嶼等水域。
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利用

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偶以潛水方式捕捉。為觀賞魚類,無食用經濟價值。罕見之種。
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描述

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體卵圓形;背部輪廓略突出。吻鈍而小。眶前骨之前緣中部具缺刻,後緣游離並且具鋸齒;主鰓蓋骨具鱗9列。上下頜相等,齒細長,約為眼徑1/3-1/2。背鰭硬棘XIV,軟條17-18;臀鰭硬棘III,軟條16-17;背鰭與臀鰭軟條部後端圓形;腹鰭尖,第一軟條延長至臀鰭第III棘;尾鰭圓形。體及頭部呈鮮黃色,體側後上方由背鰭第II-III硬棘下方延伸至尾柄處具一大塊黑褐色斑駁,眼後至背鰭起點間亦具一塊三角形之黑褐色斑塊,每一鱗片具淡藍色斑點。背鰭及臀鰭暗黃色至黑褐色,往後端漸暗;腹鰭黃色;各鰭均具藍緣;尾鰭黑褐色,另具藍斑。
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棲地

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棲息於外礁斜坡處,棲息深度在15-35公尺左右。多半單獨活動或成小群活動。生性害羞,躲躲藏藏,不易看見。主要以海藻、附著生物及被囊動物為食。
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Centropyge venusta

provided by wikipedia EN

Centropyge venusta, the purplemask angelfish is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae, It is found in the Western Pacific and is occasionally found the aquarium trade.

Description

Centropyge venusta has a blue and yellow colouration. Yellow dominates the lower front part of the body and is also found around the snout area, There is a wedge of blue on the nape separating the patches yellow. There is also an area of blue starting close to the front of the dorsal fin and covers the rear part of the body and the caudal fin. The anal and pelvic fins are yellow with blue margins.[3] The distribution of the blue and yellow colour varies in individual fishes.[4] The dorsal fin contains 14 spines and 16 soft rays while the anal fin has 3 spines and 15 soft rays. This species attains a maximum total length of 12 centimetres (4.7 in).[2]

Distribution

Centropyge venusta occurs in the western Pacific Ocean. It is found around the Ryukyu Islands and Izu Islands of southern Japan, Taiwan and northern Luzon in the Philippines.[1]

Habitat and biology

Centropyge venustais found at depths between 10 and 40 metres (33 and 131 ft).[1] It is a shy and unapproachable species of caves and overhangs, where it is typically encountered as solitary individuals oriented upside down on the roofs. It does form pairs or small groups.[2] Its diet in the wild is unknown but in captivity it requires live food.[5]

Systematics

Centropyge venusta was first formally described as Holocanthus venustus in 1969 by the Japanese ichthyologists Fujio Yasuda and Yoshiaki Tominaga with the type locality given as Izu Ōshima in Sagami Bay.[6] The specific name venusta means “beautiful”. Some authorities place this species in the subgenus Paracentropyge, which is sometimes treated as a valid genus.[7][5]

Utilisation

Centropyge venusta is rare in the aquarium trade[1] and commands high prices when it does become available.[3] It has now been bred and successfully reared in captivity.[5]

References

  1. ^ a b c d Pyle, R.; Myers, R.F. (2010). "Centropyge venusta". IUCN Red List of Threatened Species. 2010: e.T165900A6160869. doi:10.2305/IUCN.UK.2010-4.RLTS.T165900A6160869.en. Retrieved 20 November 2021.
  2. ^ a b c Froese, Rainer; Pauly, Daniel (eds.) (2019). "Centropyge venusta" in FishBase. December 2019 version.
  3. ^ a b "Centropyge venusta". Saltcorner!. Bob Goemans. 2012. Retrieved 2 February 2021.
  4. ^ Lemon Tyk (18 November 2014). "Variations and forms of Paracentropyge venusta". reef builders.com. Retrieved 2 February 2021.
  5. ^ a b c Karen Brittain (10 April 2014). "Captive breeding of purplemask angelfish". reef2rainforest.com. Retrieved 2 February 2021.
  6. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Centropyge". Catalog of Fishes. California Academy of Sciences. Retrieved 2 February 2021.
  7. ^ Christopher Scharpf & Kenneth J. Lazara (21 July 2020). "Order ACANTHURIFORMES (part 1): Families LOBOTIDAE, POMACANTHIDAE, DREPANEIDAE and CHAETODONTIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 2 February 2021.
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Centropyge venusta: Brief Summary

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Centropyge venusta, the purplemask angelfish is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae, It is found in the Western Pacific and is occasionally found the aquarium trade.

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