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Whip Coral Goby

Bryaninops yongei (Davis & Cohen 1969)

Diagnostic Description

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Characterized by semi-transparent upper body and brownish on lower; body with few evident dark bars; 3-6 lowermost pectoral rays unbranched and thickened; longitudinal scale series 26-58; cup-like pelvic fins with pocket-like thickened, folded and lobed frenum; opening of gill reaching ventrally to below base of pectoral fin (Ref. 90102).
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Recorder
Cristina V. Garilao
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Life Cycle

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Benthic spawner. Bi-directional sex change may occur as suggested by a monogamous mating system and bisexual gonadal phase (Ref. 103751).
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Philip Munday
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Morphology

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Dorsal spines (total): 7; Dorsal soft rays (total): 7 - 10; Analspines: 1; Analsoft rays: 7 - 10
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Biology

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Lives exclusively on Cirripathes anguina found along current-swept drop-offs or backreefs (Ref. 48637). Benthic (Ref. 58302). Occurs in pairs, occasionally with juvenile or a smaller female, Ref. 48637. Also found on seaward and lagoon reefs in 3-45 m (Ref 90102). Feeds on zooplanktons (Ref. 89972).
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Estelita Emily Capuli
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Importance

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aquarium: commercial
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分布

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分布於印度-太平洋區海域,由紅海到夏威夷與拉帕群島,北至臺灣、琉球群島,南至大堡礁北方。 臺灣分布於南部、東部及小琉球海域。
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利用

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小型魚類,不具漁業價值。
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描述

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第一背鰭:Ⅵ;第二背鰭:Ⅰ, 7~10 (通常是 8~9);臀鰭:Ⅰ, 7~9;胸鰭:13~17。縱列鱗 26~58 (平均 40)。身體較細長,標準體長為魚體高的5.4~8.1倍。頭寬遠大於頭高;吻稍長於眼徑長。口大,上下頜約等長;雄魚下頜具多顆大型犬齒。前鰓蓋骨及下頜的下方有許多具有感覺乳突的溝。眼間隔狹窄,約為眼徑的1/3,有2個感覺孔,感覺孔連續,不中斷。腹鰭短,相連癒合成吸盤狀,末端不會延伸至肛門,鰭末端具有肉瓣。體呈淺黃色而透明,可見到體內部具深褐色三角形斑塊,斑塊向上方延伸達背面,形成褐色斑點。體側下半部至尾鰭基部及上、下唇均呈黃褐色;頭背具一個黃褐色斑塊。背鰭及尾鰭透明無色。臀鰭及腹鰭呈淺黃褐色。胸鰭基部具一個大型黃褐色斑塊。(林上智、林沛立編寫 2012/10)
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棲地

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暖水性底層小型魚類,主要棲息於熱帶珊瑚礁的蘆莖珊瑚(海鞭)上,具有良好的保護色,與珊瑚營共生生活。常可見到成對棲息於同一株上,並將卵產於珊瑚的表面上。
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Bryaninops yongei

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B. yongei at Sumbawa, Indonesia

Bryaninops yongei, the wire-coral goby or whip coral goby, is a benthic species of goby widely distributed from the tropical and subtropical waters of the Indian Ocean (including the Red Sea) to the islands in the center of the Pacific Ocean.

Description

The whip coral goby has a semi-transparent head and body, with white scales running along its vertebra. Its head is reddish-brown to violet in color and the goby has pink to violet-red eyes.[2] Their coloration is noted to match the color of the coral they inhabit.[3] The fish is approximately 3 to 3.5 centimeters long.[4][5] Healthy whip coral gobies have seven dorsal spines, seven dorsal soft rays, one anal spine and seven anal soft rays. They also have cup-like pelvic fins and gills that open below the base of the pectoral fins.[6]

Taxonomy and naming

The whip coral goby is a member of the genus Bryaninops, the family Gobiidae and the order Perciformes.[7] It was discovered in 1906.[2]

Habitat

There are noted populations of the whip coral goby around areas such as the Marshall Islands, Chagos Archipelago and Samoa. The whip coral goby lives in and around coral species such as stinging coral.[2] Whip coral gobies usually live in pairs in association with the wire coral species Cirrhipathes anguina (Antipathidae) at depths of between 3 and 45 metres (9.8 and 147.6 ft). These pairs are usually male-female pairs.[8] This species is also found in the aquarium trade.[5]

Behavior

Reproduction

Whip coral gobies reproduce through benthic spawning, meaning they release eggs and sperm to be fertilized externally.[9] They also have the ability to change their sex when there is a gender imbalance.[10]

Relation with coral

Gobies such as the whip coral goby respond to chemical signals released from the coral reefs they inhabit. The gobies will eliminate algae toxic to coral from their environment and will also clean mucus build-ups off of coral.[11]

Defensive behaviour

The whip coral goby lacks the ability to cause harm to predators. As such, the whip coral goby is not a threat to human safety.[6] However, white coral gobies have the ability to quickly propel themselves through water to escape from predators. This defensive mechanism makes it difficult for researchers to study the fish in its natural habitat.[3]

References

  1. ^ Larson, H. (2016). "Bryaninops yongei". IUCN Red List of Threatened Species. 2016: e.T193093A2194288. doi:10.2305/IUCN.UK.2016-3.RLTS.T193093A2194288.en. Retrieved 19 November 2021.
  2. ^ a b c Randall, John (1997). Fishes of the Great Barrier Reef and Coral Sea. Hawaii: University of Hawaii Press.
  3. ^ a b "Tiny and Inconspicuous". UEMIS. Retrieved 25 May 2014.
  4. ^ Jackson, Jack (2008). Dive Atlas of the World. New Holland Publishers. p. 99. ISBN 9781847733177.
  5. ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2013). "Bryaninops yongei" in FishBase. April 2013 version.
  6. ^ a b "Bryaninops Yongei". Fish Base. Retrieved 25 May 2014.
  7. ^ "Bryaninops yongei". Animal Diversity Web. Retrieved 25 May 2014.
  8. ^ "Whip Goby, Bryaninops yongei". Australian Museum. Retrieved 25 May 2014.
  9. ^ "Reproduction of Bryaninops yongei". Fish Base. Retrieved 25 May 2014.
  10. ^ "Why Don't More Animals Change Their Sex". Yale University. Retrieved 25 May 2014.
  11. ^ "Coral Reef 911: Corals Attacked by Seaweed Use Chemical Signals to Summon Help". National Science Foundation. Retrieved 25 May 2014.

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Bryaninops yongei: Brief Summary

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B. yongei at Sumbawa, Indonesia

Bryaninops yongei, the wire-coral goby or whip coral goby, is a benthic species of goby widely distributed from the tropical and subtropical waters of the Indian Ocean (including the Red Sea) to the islands in the center of the Pacific Ocean.

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