分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Scombriformes (Mackerels)
鱸形目 (Mackerels) >
Trichiuridae (Cutlassfishes)
帶魚科 (Cutlassfishes) > Lepidopodinae
Etymology: Evoxymetopon: Greek, eu = good + Greek, oxys = sharpen + Greek, metopon = brow (Ref. 45335); macrophthalmus: Specific name refers to the large eye of the species..
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 底中水層性. 溫帶
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri
Northwest Pacific: off Okinawa I., Ryukyu Is., Japan.
西北太平洋: 外海的琉球 I. ，琉球島，日本。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 162 cm SL 雄魚/尚未辨別雌雄; (Ref. 58273)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 90; 脊椎骨: 94. Distinguished from other species with the following characters: upper head profile convex; posterior confluence of frontal ridges not elevated at the nape, resulting in the absence of the sagittal crest; eye 4.5 times in HL; lower hind margin of opercle broadly rounded; pelvic fins reduced to scalelike structure with 2 soft rays on posterior process of basipterygium, its origin below 9th dorsal-fin element; first anal spine single, oval, scalelike, and originating a short distance behind vent (opposite the 34th dorsal-fin soft ray), anterior anal-fin soft rays minute and embedded, barely penetrating skin and not visible externally, while posterior fin supporting rays enlarged and visible externally; anal-fin rays 15, externally visible; dorsal-fin elements 90, 1st spine elongate, sword-shaped, and finely ribbed; pectoral fin rays 12, with shorter anterior and longer posterior rays extending above the lateral line; first gill arch with upper gill rakers 9; vent at about 50% TL; total vertebrae 94; horizontal distance between posterior margin of eye and origin of first dorsal-fin spine short (8.5% HL); preanal length (PL) 49% TL; HL 27.5% PL; upper jaw length 9.5% PL; predorsal length 21% PL (Ref. 58273).
和下列的特徵與其他的種區分了: 上面的頭部輪廓凸狀; 在後頸不升高的前脊的在後部匯流, 造成那缺乏箭頭形的冠; 眼 4.5 HL比率; 鰓蓋的低後緣寬廣地圓的; 縮小成尺狀的結構腹鰭在第 9個背鰭要素之下有兩個軟鰭條鰭基軟骨的在後部突起 , 它的起源; 第一個臀鰭硬棘單一﹐橢圓形的﹐和尺狀的, 而且開始在排洩孔 (相對於第 34個背鰭柔軟鰭條) 後面的短距離, 前面的臀鰭軟鰭條細小的而且埋入, 幾乎穿透皮膚而不是看得見的外部地, 然而增大的支撐鰭條的在後部的鰭與看得見的外部地; 臀鰭棘條 15, 外部看得見; 背鰭要素 90 ，第一棘延長, 劍-形狀的, 與細有肋骨; 胸鰭鰭條 12, 有短的前面與在側線上面的延伸比較長的在後部的鰭條; 第一個鰓弓有上面的鰓耙 9; 於大約 50% TL 的排洩孔; 總脊椎骨 94; 水平的眼與第一背鰭起點棘短 (8.5% HL) 的後緣之間的距離; 肛門前部分的長度 (PL)49% TL; HL 27.5% PL; 上頜長度 9.5% PL; 前背的長度 21% PL.(參考文獻 58273)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
西北太平洋: 外海的琉球 I. ，琉球島，日本。
Chakraborty, A., T. Yoshino and Y. Iwatsuki, 2006. A new species of scabbardfish, Evoxymetopon macrophthalmus (Scombroidei: Trichiuridae), from Okinawa, Japan. Ichthyol. Res. 53(2):137-142. (Ref. 58273)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00275 (0.00105 - 0.00724), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.4 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
