分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Torpediniformes (Electric rays) >
Platyrhinidae (Fanrays)
Etymology: Platyrhina: Greek, platys = flat + Greek, rhinos = nose. It is the same voice used for the Mammalian division made in Primates (Ref. 45335); tangi: Named for Chinese ichthyologist D.-S. Tang.
Eponymy: D-S Tang was a Chinese ichthyologist at the University of Amoy, who was active in the 1930s. [...] (Ref. 128868), visit book page.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋 pelagic-neritic. ; 40°N - 17°N, 106°E - 141°E (Ref. 114953)
Northwest Pacific: southern Japan (except the Ryukyu and Ogasawara Islands), southern Korea, China, Taiwan and northern Vietnam.
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm ?, range 42 - ? cm
Max length : 68.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 86259); 63.9 cm TL (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
This species is distinguished from its congeners in having the following set of characters: a row of thorns (weakly hooked, sometimes tubercle-like) on mid-dorsum of tail; no thorns on the anterior part of scapular region; thorns on the orbital, nape and scapular regions encircled by light yellow or white pigment; dorsal surface covered with minute and some clearly larger dermal denticles (coarse to touch) (Ref. 86259).
Body shape (shape guide): other.
From studies on vertebral centra, it has been suggested that females attain a greater asymptotic total length (55.58 cm TL) and grew more slowly than males (45.52 cm TL) (based on specimens from Ariake Bay, western Kyushu Island, Japan). The maximum ages observed were 5 years for males and 12 years for females. Furthermore, it was also reported that females reached sexual maturity at a greater size than males (total length at 50% sexual maturity: males, 39.3 cm; females, 42.1cm). Parturition occurred from August to November followed immediately by mating, ovulation and fertilization. Largest specimen yet recorded (USNM 51295, 68.0 cm TL, Tokyo, sex unknown) with the largest specimens examined and collected from the Hyuga Nada Sea to be 63.9 cm TL for female, and 52.5 cm TL for male; however, the species is likely to grow larger than ca. 70.0 cm TL according to local Miyazaki fishermen (Ref. 86259).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Iwatsuki, Y., K. Miyamoto, K. Nakaya and J. Zhang, 2011. A review of the genus Platyrhina (Chondrichthys: Platyrhinidae) from the northwestern Pacific, with descriptions of two new species. Zootaxa 2738:26-40. (Ref. 86259)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
易受傷害 (VU) (A2cd); Date assessed: 02 September 2019
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5938 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
釣魚的脆弱性 (Ref.
59153): Moderate to high vulnerability (47 of 100).
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