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Tylosurus melanotus (Bleeker, 1850)

Keel-jawed needle fish
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Image of Tylosurus melanotus (Keel-jawed needle fish)
Tylosurus melanotus
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Seychelles country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 1623.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/se.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Collette, B.B., 1984
National Database:

Common names from other countries

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Beloniformes (Needle fishes) > Belonidae (Needlefishes)
Etymology: Tylosurus: Greek, tylos = callus + Greek, oura = tail (Ref. 45335).
  More on author: Bleeker.

Issue
Considered mostly as a subspecies in the literature. Therefore the upraise at species rank here is considered as a provisionally accepted name, until more works are conducted on T. acus susbepcies to fix their status.

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

marinhas; Água doce; estuarina associadas(os) a recifes; oceanódromo (Ref. 51243); intervalo de profundidade 0 - 1 m (Ref. 58302).   Tropical; 32°N - 28°S

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

Indo-Pacific: East Africa (Ref. 3130) to the central and south Pacific. Eastern Central Pacific: oceanic islands such as the Revillagigedo, Clipperton and Cocos (Ref. 9279).

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL macho/indeterminado; (Ref. 9137); common length : 115 cm TL macho/indeterminado; (Ref. 5450)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 0; Raios dorsais (total) : 24 - 27; Espinhos anais: 0; Raios anais : 22 - 24; Vértebras: 90 - 95. Anterior part of dorsal fin with a low lobe, contained 10.5-13.3 times in body length; a distinct black lateral keel on caudal peduncle; caudal fin deeply forked. Juveniles have an elevated black lobe in the posterior part of the dorsal fin (Ref. 9682). Longer jaws with more numerous teeth and narrower caudal lobes than T. crocodilus (Ref. 37816).

Biologia     Glossário (p.ex. epibenthic)

Found in offshore and coastal waters. Feeds mainly on small fishes. Marketed mostly fresh. The flesh is of good quality (Ref. 9682). Oviparous (Ref. 205). Eggs may be found attached to objects in the water by tendrils on the egg's surface (Ref. 205).

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

Referência principal Upload your references | Referências | Coordenador : Collette, Bruce B. | Colaboradores

Collette, B.B., 1984. Belonidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51), Volume 1. FAO, Rome. (Ref. 3130)

Status na Lista Vermelha da UICN (Ref. 130435)


CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless




Uso pelos humanos

Pescarias: espécies comerciais
FAO(Publication : search) | FishSource | Sea Around Us

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Trophic ecology
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Estimates based on models

Preferred temperature (Ref. 115969): 28.2 - 29.3, mean 28.8 (based on 979 cells).
Índice de diversidade filogenética (Ref. 82804):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00056 - 0.00281), b=3.11 (2.93 - 3.29), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  4.3   ±0.76 se; based on food items.
Resiliência (Ref. 120179):  médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  High vulnerability (60 of 100).
Categoria de preço (Ref. 80766):   Medium.