分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
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Beloniformes (Needle fishes) >
Hemiramphidae (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.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 pelagic-neritic; 深さの範囲 0 - ? m. Subtropical
Northwest Pacific: known only from Okinawa and the adjacent island of Ie. Reported from Taiwan (Ref. 5193).
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm ?, range 23 - ? cm
Max length : 25.0 cm SL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0; 背鰭 (合計) : 15 - 18; 肛門の骨: 0; 臀鰭: 17 - 19; 脊つい: 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.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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のレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00257 (0.00116 - 0.00571), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (参照
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
回復力 (参照
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Low vulnerability (21 of 100).
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