Costa Rica country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Motomura, H., 2004
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Collected from Gulf of Nicoya (Ref. 45049).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/cs.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Schneider, M., 1995
National Database:

Common names from other countries

Barbure bleu, Barbudo azul, زعنفة رقيقة زرقاء, ... more

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Carangaria/misc (Various families in series Carangaria) > Polynemidae (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335).
More on authors: Lay & Bennett.

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

marien; brak water demersaal; diepte 10 - 60 m (Ref. 91172). Subtropical; 37°N - 12°S, 122°W - 77°W (Ref. 57343)

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Eastern Pacific: Monterey Bay, California, USA to Callao, Peru. One record from the Galapagos Islands. Rare north of Baja California, Mexico (Ref. 2850). Record from Chile (Ref. 9068) needs to be verified (Ref. 57343).

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 36.8 cm TL mannelijk / geslacht onbekend; (Ref. 115882); common length : 20.0 cm TL mannelijk / geslacht onbekend; (Ref. 55763)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 9; Dorsale zachte stralen (totaal) : 11 - 13; Anale stekels: 3; Anale zachte stralen: 13 - 15; Wervels: 24. Body grayish, no stripes or spots. Lip on lower jaw well developed. Dentary teeth restricted to dorsal surface. Maxilla not covered with scales. Pectoral filaments 6; longest not reaching beyond level of posterior end of anal fin base. Lateral line bifurcated on caudal fin membranes, extending to posterior margins of upper and lower caudal fin lobes. Swim bladder present (Ref. 45049).

Found in shallow water near the coast, on sand and mud bottoms (Ref. 9332). Larvae and small juveniles (>4 cm) are pelagic and sometimes occur several hundred kilometers offshore, whereas the larger juveniles and adults prefer shallow near-shore waters like bays, sloughs or estuaries where the bottom is sandy or muddy (Ref. 28023). Omnivorous, feeds on worms, sand crabs, shrimp, clams; sometimes feeds on fish like small anchovy (Ref. 28023). Esteemed food fish where it occurs (Ref. 57343). Also Ref. 55763.

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Motomura, H., 2004. Threadfins of the world (Family Polynemidae). An annotated and illustrated catalogue of polynemid species known to date. FAO Spec. Cat. Fish. Purp. Rome: FAO. 3:117 p. (Ref. 57343)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet bedreigd (LC) ; Date assessed: 24 May 2007

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: commercieel

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Estimates based on models

Preferred temperature (Ref. 115969): 20.5 - 29, mean 25.9 (based on 273 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00646 (0.00433 - 0.00962), b=3.06 (2.94 - 3.18), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.6 ±0.6 se; based on diet studies.

Weerstandsvermogen (Ref. 120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (27 of 100).

Prijsklasse (Ref. 80766): Very high.

Polydactylus approximans (Lay & Bennett, 1839)