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Sundasalanx mekongensis
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drawing shows typical species in Ehiravidae.
Teleostei (teleosts) >
Clupeiformes
(Herrings) >
Ehiravidae
(River sprats)
Etymology:
Sundasalanx:
Composed from Sunda, Asiatic island + latinization of Philippines, salamga, French salangana = the name of a kind of swallow (Ref.
45335
)
.
More on authors:
Britz
&
Kottelat
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
Asia: Mekong basin in Laos and Thailand.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 2.8 cm SL male/unsexed; (Ref.
38648
)
Short description
Morphology
|
Morphometrics
Dorsal
soft rays
(total): 12-15;
Anal
soft rays
: 16 - 20;
Vertebrae
: 38 - 42. Differs from all except
S. praecox
in having vomerine tooth plates (versus missing), more maxillary teeth (30, versus 12-19), 1-3 teeth on caudal end of basibranchial 1-2 in most specimens (versus missing), a completely ringed proximal end of epibranchial 3 surrounding third efferent branchial artery (versus partially encircled), and in lacking in midventral row of melanophores (versus presence). Differs from
S. malleti
in lacking a basipterygium pigment ring (versus presence). Differs from
S. praecox
in having several (3-5) prepectoral melanophores (versus missing), more vertebrae (38-42, versus 37-38) and no palatine teeth (versus presence). Differs from all other Sundasalangidae (except
S. praecox
and
S. malleti
) in lacking a cardiac chamber pigmentation (versus presence). Also differs from all congeners in having a dermethmoid, supraorbitals, hyomandibulars, autopterotics, exoccipitals, basioccipital and ventral hypohyals (versus these bones not ossified), more gill rakers on branchial arches (10-16 on first arch [versus 2-9], 9-11 on second and third arches, 7-9 anteriorly and 6-8 posteriorly on fourth arch, 6-7 on fifth arch).
Found mostly in large rivers with muddy bottom, turbid water and slow to moderate current. Caught by seine and push net. In all habitats where it was collected by push-net, it was only present at depths greater than 1 meter, usually at a depth immediately below those at which a slight drop in temperature could be felt. Located above the bottom, usually above a layer of 10-20 cm loose ooze.
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Britz, R. and M. Kottelat
, 1999.
Sundasalanx mekongensis
, a new species of clupeiform fish from the Mekong basin (Teleostei: Sundasalangidae). Ichthyol. Explor. Freshwat. 10(4):337-344. (Ref.
38648
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
17 February 2012
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
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00188 - 0.01164), b=3.03 (2.82 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.0 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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