dcsimg

Biology

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Adults occur inshore (Ref. 7300).
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Importance

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fisheries: subsistence fisheries; gamefish: yes
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分布

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僅發現於澳洲及台灣東部。在台灣是極為罕見之魚。
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利用

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一般漁法以延繩釣、流刺網、及定置網捕獲。清蒸、煎食、煮湯皆宜。
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描述

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體呈卵圓形,甚側扁,隨著成長而逐漸向後延長。第一背前骨呈“L”形。尾柄短細,背腹側無肉質稜脊亦無凹槽。吻鈍。眼小,脂性眼瞼不發達。上下頜、鋤骨和腭骨均具細小的絨毛狀齒,隨著成長而漸退化;舌面一般無齒。第一鰓弓下枝鰓耙數(含瘤狀鰓耙)7-10。側線幾呈直線狀或微波狀,無稜鱗。無離鰭。第一背鰭5-6硬棘,幼魚時,具鰭膜,隨著成長而漸呈游離狀;第二背鰭與臀鰭同形,前方鰭條延長而呈彎月形;無離鰭;尾鰭深叉,末端尖細。體背藍灰,腹部銀白;體側無任何斑點。背、尾鰭暗色至暗橙色;臀鰭淡黃色至暗黃色。
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棲地

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棲息於沿海礁岩底質淺水海域,但常可發現其出現於砂泥質的激浪區。以無脊椎動物為食。
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Trachinotus anak

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Trachinotus anak, the giant oystercracker, or oyster pompano, is a marine fish endemic to the coasts of tropical Australia, one of 20 species of pompano (Trachinotus spp.).[2][3]

Description

The fish has a silvery greenish or bluish-grey color above and is paler below. It often has a bronze or a green-gold tinge. The second dorsal and caudal fins are a dusky orange to nearly black. The fins have dark leading edges. The anal fin is a dandelion yellow and the pelvic fins are paler. The pectoral fins are dark.[4]

Taxonomy

In the early 20th century, Australian ichthyologist James Douglas Ogilby was identifying fishes to give advice to fisheries, under supervision of James Stevens, the Queensland Inspector of Fisheries. When the question emerged of what was damaging oyster populations in the Wide Bay district in January 1908, Ogilby determined that the organism to cause this damage was a large fish, yet undescribed to science. He described it as Trachinotus anak in a report in 1909.[5]

References

  1. ^ Smith-Vaniz, W.F. & Williams, I. (2017) [errata version of 2016 assessment]. "Trachinotus anak". IUCN Red List of Threatened Species. 2016: e.T20436452A115383762. doi:10.2305/IUCN.UK.2016-3.RLTS.T20436452A67871535.en.
  2. ^ "Giant Oystercracker". Atlas of Living Australia. Archived from the original on 2018-11-25. Retrieved 2018-11-25.
  3. ^ Green, Andrew. "Trachinotus anak". Reef Life Survey. Archived from the original on 2018-11-25. Retrieved 2018-11-25.
  4. ^ Bray, Dianne J. "Trachinotus anak". Fishes of Australia. Archived from the original on 2018-11-25. Retrieved 2018-11-25.
  5. ^ Saunders, Brian (2012-05-11). Discovery of Australia's Fishes: A History of Australian Ichthyology to 1930. Csiro Publishing. ISBN 9780643106727.
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Trachinotus anak: Brief Summary

provided by wikipedia EN

Trachinotus anak, the giant oystercracker, or oyster pompano, is a marine fish endemic to the coasts of tropical Australia, one of 20 species of pompano (Trachinotus spp.).

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