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Tetrapturus georgii Lowe, 1841

Roundscale spearfish
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Native range | All suitable habitat | Point map | Year 2050
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Tetrapturus georgii   AquaMaps   Data sources: GBIF OBIS
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Image of Tetrapturus georgii (Roundscale spearfish)
Tetrapturus georgii
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Common names from other countries

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | ITIS | CoL | WoRMS | Cloffa

> Carangiformes (Jacks) > Istiophoridae (Billfishes)
Etymology: Tetrapturus: Greek, tetra = four + Greek, pteron, fin, wing (Ref. 45335).
  More on author: Lowe.

Environment: milieu / climate zone / depth range / distribution range экология

морской; мигрирует в океане (Ref. 51243); пределы глубины 0 - 200 m (Ref. 43).   Subtropical; 42°N - 29°S, 98°W - 18°E (Ref. 43)

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Eastern Atlantic and Mediterranean Sea: Positively known only from Madeira, Sicily (Italy), Strait of Gibraltar, and the adjacent Atlantic Ocean off southern Portugal. Can be expected to range widely in the eastern and perhaps central North Atlantic. Central and eastern Atlantic records from Japanese longliner's data need clarification. Highly migratory species.

Size / Вес / Возраст

Maturity: Lm ?  range ? - ? cm
Max length : 184 cm FL самец/пол неопределен; (Ref. 43); 181.0 cm FL (female); наибольший вес (опубликованные данные): 21.5 kg (Ref. 43); наибольший вес (опубликованные данные): 21.5 kg

биология     глоссарий (например epibenthic)

Further study is strongly needed to clarify the validity of this species. Probably oceanic. Length has been transferred from 'Body length' to FL (* 0.15).

Life cycle and mating behavior Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки

Основная ссылка Upload your references | ссылки | координатор | соавторы

Nakamura, I., 1985. FAO species catalogue. Vol. 5. Billfishes of the world. An annotated and illustrated catalogue of marlins, sailfishes, spearfishes and swordfishes known to date. FAO Fish. Synop. 125(5):65p. Rome: FAO. (Ref. 43)

Статус Красного Списка МСОП (Ref. 130435)

  Нехватка данных (DD) ; Date assessed: 15 November 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

  Harmless




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Estimates based on models

Preferred temperature (Ref. 115969): 14.3 - 19.1, mean 17.1 (based on 37 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5630   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00193 - 0.01034), b=3.14 (2.94 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.3   ±0.4 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref. 120179):  высокий, минимальное время удвоения популяции до 15 месяцев (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).