Brazil country information

Common names: Peixe agulha, Pirapucu
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Recorded from Capim River (Ref. 50279).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Collette, B.B., 1982
National Database:

Common names from other countries

Poisson aiguille, Lápiz, Ferskvandshornfisk, ... more

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Beloniformes (Needle fishes) > Belonidae (Needlefishes)
Etymology: Potamorrhaphis: Greek, potamos = river + Greek, rhaphis = needle (Ref. 45335).

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

; eau douce pélagique; profondeur 0 - ? m. Tropical; 23°C - 26°C (Ref. 2059)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

South America: Amazon and Orinoco River basins, and the Guianas.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 29.1 cm TL mâle / non sexé; (Ref. 40653); common length : 12.3 cm OT mâle / non sexé; (Ref. 10994)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 29 - 36; Épines anales: 0; Rayons mous anaux: 25 - 32; Vertèbres: 68 - 78. Predorsal scales 85-135, mean 110.3 (Ref. 10994, Table 7).

Forms schools at the surface. Prefers to inhabit marshes, small slow-moving creeks or even in main river beds, in the slowest parts of meandering streams next to banks (Ref. 35237). Voracious carnivore which appears to have a primarily nocturnal habit (Ref. 27188). During reproduction, the male positions itself beside the female or crosswise in front of her. Sometimes the male touches the female with his side, pushing her aside in an oblique position, with their heads oriented downwards. The couple settles next to a bush where the female spawns her eggs (15 to 40). Eggs adhere to plants by means of sticky filaments which are 2 to 3 mm long. At 27-30°C, incubation lasts for 9 to 10 days. Larvae are pelagic and carnivorous (Ref. 35237). Maximum length 40 cm TL in Keith et al., 2000 (Ref. 35237).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

The eggs are attached to underwater vegetation. At 27-30 deg. Celsius the larvae hatch after 9 - 10 days. The larvae are pelagic carnivores.

Référence principale Upload your references | Références | Coordinateur : Collette, Bruce B. | Collaborateurs

Collette, B.B., 1982. South American freshwater needlefishes of the genus Potamorrhaphis (Beloniformes: Belonidae). Proc. Biol. Soc. Wash. 95(4):714-747. (Ref. 10994)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Préoccupation mineure (LC) ; Date assessed: 21 August 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [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).

Niveau trophique (Ref. 69278): 3.9 ±0.6 se; based on size and trophs of closest relatives

Résilience (Ref. 120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (19 of 100).

Potamorrhaphis guianensis (Jardine, 1843)