Polydactylus sextarius, Blackspot threadfin : fisheries, gamefish

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Polydactylus sextarius (Bloch & Schneider, 1801)

Blackspot threadfin
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Polydactylus sextarius   AquaMaps   Data sources: GBIF OBIS
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Image of Polydactylus sextarius (Blackspot threadfin)
Polydactylus sextarius
Picture by Randall, J.E.

Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | 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: Bloch & Schneider.

Issue
Genus Eschmeyer, pers. comm.

Environment: milieu / climate zone / गहराई सीमा / distribution range पारिस्थितिकी

समुद्री; खारा ड़िमरसल; ऐम्फिढरोमस (Ref. 51243); गहराई सीमा 16 - 73 m (Ref. 57343). Tropical; 37°N - 11°S, 75°E - 149°E

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | बिन्दु नक्शा | भूमिका | Faunafri

Eastern Indian Ocean and Western Pacific: southwestern India to Papua New Guinea, north to Japan. May rarely occur in the Philippines, eastern Indonesia, and Papua New Guinea (Ref. 57343). Not in Red Sea (Ref. 84159).

आकार / वज़न / Age

परिपक्व अवधि: Lm ?  range ? - ? cm
Max length : 30.0 cm TL पुल्लिंग / अलिंग; (Ref. 30573); common length : 20.0 cm TL पुल्लिंग / अलिंग; (Ref. 30573)

Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

पृष्ठीय रीढ़ (सम्पूर्ण) : 9; पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 12 - 13; गुदा कांटा: 3; ऐनल सौफट रेज़: 11 - 13; जानवरों की रीड़ का जोड़: 24. With 6 pectoral filaments; uppermost not reaching posterior tip of pectoral fin. Pectoral fin, rays moderate, 19-25% of SL; all rays branched except uppermost 1 or 2. Second dorsal spine short, 5-8% of SL. Atrophied swim bladder, like a string. A large black spot anteriorly on lateral line (Ref. 40958, 41110). No upper lip; lower lip well-developed except at symphysis. Operculum broadly rounded; preoperculum coarsely serrated. Color is golden-olive above ,silvery below. A large oval blotch is at the start of the lateral line (Ref. 561).
Body shape (shape guide): short and / or deep; Cross section: compressed.

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

A marine species found on sandy and muddy bottoms of the continental shelf (Ref. 4340, 11230, 57343). Frequently enters estuaries (Ref. 9685, 11230). Feeds mainly on small crustaceans (especially shrimps), fishes and benthic organisms; also on sponges and fish scales (Ref. 9685). The progression in this hermaphrodite is protandrous, changing from a juvenile to a hermaphrodite, then a female (Ref. 9685).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Main reference Upload your references | संदर्भ | संयोजक | सहयोगीयो

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: Version 2025-1)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

मात्स्यिकी: व्यापारिक; आखेट मत्स्य: हां
FAO - Publication: search | FishSource |

अधिक जानकारी

Trophic ecology
Food items (preys)
संघटक आहार
आहार खपत
Food rations
परभक्षी
पारिस्थितिकी
पारिस्थितिकी
Home ranges
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
भर्ती
बहुतायत
Life cycle
पुनरुत्पत्ति
परिपक्व अवधि
Maturity/Gills rel.
Fecundity
मछलीऔ का अंडे देना
Spawning aggregations
अंडे
Egg development
लार्वा
लारवल गतिकी
वितरण
देश
ऐफ ऐ ओ क्षेत्र
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Anatomy
गिल क्षेत्र
Brain
Otolith
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Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
आनुवंशिकी
Genome
आनुवंशिकी
Heterozygosity
हैरेटिबिलटी
Human related
Aquaculture systems
जलीयकृषि रूपरेखाऐ
खींच
Ciguatera cases
Stamps, coins, misc.
संदर्भ
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साधन

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इंटरनेट स्रोत

Estimates based on models

Preferred temperature (संदर्भ 123201): 23.5 - 28.4, mean 27.7 °C (based on 227 cells).
Phylogenetic diversity index (संदर्भ 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00925 - 0.02365), b=3.04 (2.91 - 3.17), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (संदर्भ 69278):  3.8   ±0.57 se; based on food items.
Generation time: 3.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
लौटाव (संदर्भ 120179):  माध्यम, न्यूनतम जनसंख्या दुगनी होने का समय 1.4 - 4.4 वर्ष। (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (31 of 100). 🛈
Price category (Ref. 80766):   Very high.