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Charax pauciradiatus
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Charax pauciradiatus
Picture by
Mikolji, I.
Teleostei (teleosts) >
Characiformes
(Characins) >
Characidae
(Characins; tetras) > Characinae
Etymology:
Charax:
Charax, -akos = a fish without identification (Ref.
45335
)
.
More on author:
Günther
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; pH range: 6.2 - 7.5; dH range: ? - 25. Tropical; 22°C - 27°C (Ref.
2059
)
South America: lower Amazon River basin in Brazil (Ref.
36811
). Reported from Suriname (Ref.
59052
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 10.1 cm SL male/unsexed; (Ref.
36811
)
Because of its form, this species is very easy to capture with a net. The males are very much smaller than the females. Reproduction takes place during the rainy season. The eggs are deposited on the vegetation and its incubation lasts for 30 hours. Below 6 cm, the juveniles prefer to feed on the larvae of Chironomidae and to a lesser degree on Cladocera. Then, by order of preference, they feed on shrimps, Odonata nymphs and fish juveniles of
Ctenobrycon
and
Curimata
(Ref.
12225
). Frequents all types of environment (Ref.
27188
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Planquette, P., P. Keith and P.-Y. Le Bail
, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref.
12225
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
07 November 2018
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00415 - 0.02411), b=3.08 (2.87 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.7 ±0.57 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 (10 of 100).
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- 20 July 2016
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