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Life Cycle

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Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205). Gives birth to ~3 pups; born between 20-22 cm WD (Ref.58048).
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Recorder
Susan M. Luna
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Trophic Strategy

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In sandy regions in coastal waters (Ref. 9137). A carnivore (Ref. 9137).
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Pascualita Sa-a
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Biology

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Inhabits sandy or muddy bottom in shallow waters (Ref. 11230). Feeds on benthic animals. Spines covered with skin with poisonous glands. Ovoviviparous. Used as 'kamaboko' material (Ref. 637). Caught often by demersal trawl, trammel and gillnet fisheries, and occasionally using tangle nets.Utilized for its meat, but of limited value due to its typically small size (Ref.58048).
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Rainer Froese
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分布

provided by The Fish Database of Taiwan
分布於中國、日本、朝鮮沿海。
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臺灣魚類資料庫
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利用

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偶由底拖網捕獲,非重要之經濟魚類。
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描述

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體盤寬大,前緣波曲,與吻端呈60-70度,後緣廣圓,前角鈍尖,後角圓鈍,體盤寬比體盤長大2.1-2.2倍,體盤後部三分之一處最寬,吻短,吻端在雌魚微突,吻長等於體盤長六分之一或稍大,比眼睛間隔為小(在幼體相等)。眼睛小,微突;眼球比出水孔小,眼間隔平坦或微凹。鼻孔寬大;前鼻瓣寬短,後鼻瓣前部具薄膜狀半圓形突出.口寬平,在幼體和雌魚口寬比口前吻長為大,在雄魚口寬與前吻長相等或稍小。在雄魚呈體內側具一對粒狀突起,在雌魚不顯著。牙細小而多,密列,齒頭細尖。腹鰭長方形;鰭腳扁圓,後端頗尖。尾刺短小,約1-2個,在幼體未出現。體盤背面灰褐色或青褐色,散布著暗色小班及大型斑塊,後者幾乎左右相稱,約列成三四橫行;腹鰭外緣白色;尾具黑色橫紋,在尾刺前呈合併現象,在尾刺後者約6-7條,最後二或三條圍成環紋,有時白紋上具一小黑斑;鰭腳邊緣淡白色。腹面白色,邊緣灰褐色。(陳柔蓉、林沛立2012/11編寫)
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棲地

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底棲型,深度至少30公尺以上。
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Gymnura japonica

provided by wikipedia EN

Gymnura japonica, the Japanese butterfly ray , is a species of ray in the family Gymnuridae. It is found from Japan to Cambodia.

References

  • Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The Fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)

[2]

  1. ^ "Gymnura japonica (Japanese Butterfly Ray)". Iucnredlist.org. 2021. Retrieved 26 April 2021.
  2. ^ "Gymnura japonica, Japanese butterflyray". Fishbase.org. 2016-07-20. Retrieved 2017-01-14.
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Gymnura japonica: Brief Summary

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Gymnura japonica, the Japanese butterfly ray , is a species of ray in the family Gymnuridae. It is found from Japan to Cambodia.

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