分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Beloniformes (Needle fishes)
頜針魚目 (Needle fishes) >
Hemiramphidae (Halfbeaks)
鱵科 (Halfbeaks)
Etymology: Hyporhamphus: Greek, hypo = under + Greek, rhamphos = beak, bill (Ref. 45335).
Eponymy: Yuri Alexandrovich Rudjakov (d: 1938) is a researcher of suprabenthic plankton. He took part in cruises to Nazca and Sala y Gomez ridges, Eastern South Pacific, where this species can be found. (Also see Yuri (Rudjakov)) (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋; 深度上下限 0 - ? m. 亞熱帶的
Northwest Pacific: known only from Okinawa and the adjacent island of Ie. Reported from Taiwan (Ref. 5193).
西北太平洋: 已知只來自琉球與 Ie 的毗連島了。 記錄來自台灣了。 (參考文獻 5193)
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm ?, range 23 - ? cm
Max length : 25.0 cm SL (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 背的軟條 (總數) : 15 - 18; 臀棘: 0; 臀鰭軟條: 17 - 19; 脊椎骨: 59 - 61. Upper jaw longer than in Hyporhamphus balinensis and Hyporhamphus affinis, its length almost equal to its width; vertebrae 58 or more; preorbital bone 1.1-1.6 times in diameter of orbit.
上頜長度超過在 Hyporhamphus balinensis 與 Hyporhamphus affinis 中，它的長度幾乎等於它的寬度; 脊椎骨 58個或更多; 倍眼窩的直徑的眶前骨 1.1-1.6。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
西北太平洋: 已知只來自琉球與 Ie 的毗連島了。 記錄來自台灣了。 (參考文獻 5193)
Collette, B.B. and J. Su, 1986. The halfbeaks (Pisces, Beloniformes, Hemiramphidae) of the Far East. Proc. Acad. Nat. Sci. Philadelphia 138(1):250-301. (Ref. 10943)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00257 (0.00115 - 0.00574), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (21 of 100).
