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Polydactylus malagasyensis Motomura & Iwatsuki, 2001

African blackspot threadfin
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Polydactylus malagasyensis   AquaMaps   Data sources: GBIF OBIS
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Image of Polydactylus malagasyensis (African blackspot threadfin)
Polydactylus malagasyensis
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Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | 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);  malagasyensis: Named for old name of Madagascar, Malagasy, its type locality (Ref. 40958).

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

marina; brackvatten bottenlevande; djupintervall 5 - 62 m (Ref. 40958). Tropical; 1°N - 35°S, 25°E - 51°E (Ref. 57343)

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Western Indian Ocean: Kenya, Mozambique, South Africa, and Madagascar. Likely to occur in Somalia and Tanzania.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 14.9 cm SL hane/ej könsbestämd; (Ref. 40958)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 9; Mjukstrålar i ryggfenan (totalt) : 12 - 13; Taggstrålar i analfenan: 3; Mjukstrålar i analfenan: 12; Ryggkotor: 24. With 6 pectoral filaments; uppermost not reaching to (or extending slightly beyond) posterior tip of pectoral fin. Pectoral fin, rays long, 21-26% of SL; fin base long, 10-12% of SL; all rays branched except uppermost 1 or 2. Second dorsal spine long, 7-9% of SL. Well-developed swim bladder. A large black spot anteriorly on lateral line (Ref. 40958).

Biologi     Ordlista (t.ex. epibenthic)

Found in estuaries as well as offshore (Ref. 57343).

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

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)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: saknar intresse
FAO - Publication: search | FishSource |

Ytterligare information

Trophic ecology
Födoslag
Diet compositions
Food consumptions
Food rations
Predatorer
Ecology
Ekologi
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduktion
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larver
Larvdynamik
Distribution
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BRUVS - Videos
Anatomy
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Otoliths
Physiology
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Nutrients
Oxygen consumptions
Swimming type
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Visual pigment(s)
Fiskljud
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetik
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Vattenbruksprofiler
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Ciguatera cases
Stamps, coins, misc.
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Taxonomy
Populärnamn
synonymer
Morfologi
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References
referenser

Verktyg

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Summary page | Point data | Populärnamn | Photos

Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 24 - 27.5, mean 26.4 °C (based on 50 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00751 - 0.04023), b=3.05 (2.86 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.5   ±0.5 se; based on size and trophs of closest relatives
Resiliens (Ref. 120179):  Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).