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Polynemus dubius, Eastern paradise fish
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Polynemus dubius
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Teleostei (teleosts) >
Carangaria/misc
(Various families in series Carangaria) >
Polynemidae
(Threadfins)
Etymology:
Polynemus:
Greek, poly = a lot of + Greek,nema = filament (Ref.
45335
)
.
More on author:
Bleeker
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; freshwater; brackish; demersal; potamodromous (Ref.
51243
). Tropical
Asia: Malay Peninsula, Sumatra and Kalimantan.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 20.0 cm SL male/unsexed; (Ref.
12693
)
Dorsal
spines
(total): 9;
Dorsal
soft rays
(total): 14-16;
Anal
spines
: 3;
Anal
soft rays
: 12;
Vertebrae
: 25. First dorsal fin with 8 spines; 7 pectoral filaments, upper two filaments longer than total length; vomer with villiform teeth; orbit diameter 3-4% of standard length; posterior portion of maxilla less than orbit diameter (Ref.
49954
).
Found in muddy or sandy waters of freshwater rivers and estuaries (Ref.
57343
). Regularly enters freshwater streams during the spawning season, and probably at other times (Ref.
9685
). Large numbers of adults and young caught during the rainy season in the Chao Phraya River and other rivers of that system. Feeds on crustaceans, small fishes, and benthic organisms (Ref.
57343
). Marketed fresh (Ref.
12693
). Small fish may be used as duck feed and fertilizer (Ref.
9685
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
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
)
Least Concern (LC)
; Date assessed:
13 June 2018
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00269 - 0.01173), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.7 ±0.55 se; based on food items.
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (14 of 100).
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