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) >
Carcharhiniformes (Ground sharks)
真鯊目 (Ground sharks) >
Proscylliidae (Finback catsharks)
原鯊科 (Finback catsharks)
Etymology: Eridacnis: Etymology not explained, possibly eri-, Greek intensive particle (i.e., very), and dakno (Gr.), bite, referring to “wide, angular” mouth of E. radcliffei (See ETYFish); radcliffei: In honor of ichthyologist-malacologist Lewis Radcliffe (1880-1950), scientific assistant of the U.S. Bureau ofFisheries and member of team that collected holytype from aboard the fisheries steamer Albatross (See ETYFish).
Eponymy: Lewis Radcliffe (1880–1950) was an American naturalist, particularly interested in malacology and ichthyology. [...] (Ref. 128868), visit book page.
More on author: Smith.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋 深海底的; 深度上下限 71 - 766 m (Ref. 10004). 深水域; 22°N - 10°S
Indo-West Pacific: widely distributed but with spotty records from Tanzania, the Gulf of Aden, India (Gulf of Mannar, Bay of Bengal), Andaman Islands, Viet Nam, and the Philippines. The immense range of this species is striking compared to the limited ranges of other members of the genus.
印度-西太平洋: 廣泛地分佈但是有點狀的來自坦尚尼亞，印度亞丁灣 (馬納爾灣 , 孟加拉灣) ，安達曼群島，越南與菲律賓的紀錄。 這一個有顯著的大範圍分佈相較於本屬的其他成員的有限制範圍。
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm 15.5, range 15 - 16 cm
Max length : 23.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 244); 24.0 cm TL (female)
背棘 (總數) : 0; 臀棘: 0. Caudal fin without a rippled dorsal margin and ventral lobe but with a strong subterminal notch; vertebral axis of caudal fin little raised above body axis (Ref. 13566). Dark brown with blackish markings on dorsal fins (Ref. 13566).
Body shape (shape guide): elongated.
尾鰭沒有波浪狀的上緣與腹葉但是有一個強的接近端位的凹槽; 尾鰭的椎骨軸在體軸上方稍微向上。 (參考文獻 13566) 深褐色的在背鰭上有黑色的斑紋.(參考文獻 13566)
Occurs over muddy bottoms, on the upper continental and insular slopes and outer shelves (Ref. 244). Feeds mainly on small bony fishes and crustaceans, with squid a lesser item in the diet (Ref. 244). One of the two smallest living sharks (Ref. 13566). Ovoviviparous (Ref. 50449), with 1 to 2 pups in a litter (Ref. 244).
在上層大陸斜坡與島嶼斜坡與外部的架上生活在泥底部之上。 (參考文獻 244) 主要吃小的硬骨魚類與甲殼動物, 較少獵捕烏賊.(參考文獻 244) 二個中的一個最小的活鯊魚.(參考文獻 13566) 卵胎生的 (參考文獻 50449),1 到 2個幼胎一胎.(參考文獻 244)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). 1-2 pups per litter, size at birth about 11 cm (Ref. 244).印度-西太平洋: 廣泛地分佈但是有點狀的來自坦尚尼亞，印度亞丁灣 (馬納爾灣 , 孟加拉灣) ，安達曼群島，越南與菲律賓的紀錄。 這一個有顯著的大範圍分佈相較於本屬的其他成員的有限制範圍。
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 24 April 2018
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基於模型的估計
首選溫度 (參考文獻
123201): 9.3 - 18.6, mean 12.7 °C (based on 254 cells).
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.6328 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00288 (0.00112 - 0.00741), b=3.14 (2.91 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 4.1 ±0.3 se; based on diet studies.
回復力 (參考文獻
120179): 非常低的, 最小族群倍增時間超過14 年 (Fec=1).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (14 of 100).
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營養素 (Ref.
124155): Calcium = 14.4 [2.4, 98.2] mg/100g; Iron = 0.371 [0.078, 1.303] mg/100g; Protein = 18.1 [16.0, 20.2] %; Omega3 = 0.235 [0.091, 0.594] g/100g; Selenium = 8.99 [2.70, 29.75] μg/100g; VitaminA = 35.1 [6.9, 180.5] μg/100g; Zinc = 0.462 [0.219, 0.922] mg/100g (wet weight);
