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Tetrapturus georgii Lowe, 1841

Roundscale spearfish
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Tetrapturus georgii   AquaMaps   Data sources: GBIF OBIS
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Image of Tetrapturus georgii (Roundscale spearfish)
Tetrapturus georgii
Picture by FAO

Common names from other countries

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | 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 Ecologia

marinhas; oceanódromo (Ref. 51243); intervalo de profundidade 0 - 200 m (Ref. 43).   Subtropical; 42°N - 29°S, 98°W - 18°E (Ref. 43)

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

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.

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 184 cm FL macho/indeterminado; (Ref. 43); 181.0 cm FL (female); peso máx. publicado: 21.5 kg (Ref. 43); peso máx. publicado: 21.5 kg

Biologia     Glossário (p.ex. 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).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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)

Status na Lista Vermelha da UICN (Ref. 130435)

  Dados insuficientes (DD) ; Date assessed: 15 November 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless




Uso pelos humanos

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Trophic ecology
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Estimates based on models

Preferred temperature (Ref. 115969): 14.3 - 19.1, mean 17.1 (based on 37 cells).
Índice de diversidade filogenética (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).
Nível Trófico (Ref. 69278):  4.3   ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref. 120179):  Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).