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Beloniformes (Needle fishes) >
Hemiramphidae (Halfbeaks)
Etymology: Hemiramphus: Greek, hemi = half + Greek, rhamphos = bill, peak (Ref. 45335).
Eponymy: Count Frédéric Benjamin Lütke (1797–1882) was a Russian (of German descent) explorer and navigator. [...] (Ref. 128868), visit book page.
More on author: Valenciennes.
Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري; مياه مخلوطة مرتبطة بالشعاب; نطاق العمق 0 - ? m. Tropical
Pacific Ocean: ranging eastward to the Gilbert Islands and Samoa, north to southern Japan. Confused with Hemiramphus archipelagicus under the name Hemiramphus marginatus by many authors (Ref. 10943).
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm 22.6, range 22 - 23.6 cm
Max length : 40.0 cm SL ذكر/ مختلط الجنس; (Ref. 54980); common length : 25.0 cm SL ذكر/ مختلط الجنس; (Ref. 9843)
الأشواك الظهرية (المجموع) : 0; الأشعة الظهرية الناعمة (المجموع) : 12 - 15; شوكة شرجية: 0; أشعه شرجية لينه: 10 - 13; فقرات: 52 - 57. Greatly prolonged, beak-like lower jaw; upper jaw short, triangular and without scales; preorbital ridge absent; total number of gill rakers on first gill arch 33-46; pectoral fins long, reaching beyond anterior margin of nasal pit when folded forward; no spots or vertical bars on sides.
Inhabits coastal waters rich in vegetation (Ref. 5213). Found more offshore than other species of Hemiramphus in the western central Pacific; juveniles and immature individuals are relatively common far from shore, usually among floating plants (Ref. 9843). Caught by set-net.
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
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 Red List Status (Ref. 130435: Version 2024-2)
استخدامات بشرية
مصائد: غير مهمة تجارياً
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 24.3 - 29.3, mean 28.4 °C (based on 3275 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00196 - 0.01020), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
المرونه (Ref.
120179): عالي, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أقل من 15 شهر (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (39 of 100).
![Image of Hemiramphus lutkei (Lutke\](/images/thumbnails/jpg/tn_Helut_u1.jpg "Image of Hemiramphus lutkei (Lutke\")
