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Silvinichthys mendozensis
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drawing shows typical species in Trichomycteridae.
Classification / Names
Common names
|
Synonyms
| Catalog of Fishes(
genus
,
species
) |
ITIS
|
CoL
|
WoRMS
|
Cloffa
Teleostei (teleosts) >
Siluriformes
(Catfishes) >
Trichomycteridae
(Pencil or parasitic catfishes) > Trichomycterinae
Etymology:
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Temperate
South America: Mendoza River basin in Argentina.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 7.3 cm male/unsexed; (Ref.
33071
)
Short description
Morphology
|
Morphometrics
Dorsal
soft rays
(total): 11-14;
Anal
soft rays
: 10 - 12;
Vertebrae
: 39 - 43. Entire surface of body skin perforated by pores of ampullary organs; cephalic sensory canal system represented only by anterior portion of supraorbital canal enclosed by nasal bone, and posterior portion of postotic canal enclosed by pterotic and posttemporosupracleithrum; two anteriormost pores of supraorbital canal present medial to anterior and posterior nostrils, respectively; one or two pores of postotic canal on pterotic and between pterotic and posttemporosupracleithrum; body lateral line represented only by portion posterior to head, with one or two pores; head and body pit lines absent in most individuals; peritoneum and wall of pleuroperitoneal cavity blackish due to presence of many melanophores; eye small and supported by membranous outgrowth of hyomandibula and by membrane; and ceratobranchial and epibranchial bones without ossified gill rakers. The short dorsal fin has 5 precurrent rays plus 6 to 9 principal rays; anal fin has 4 precurrent rays and 6 to 8 principal rays.
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Arratia, G.
, 1998.
Silvinichthys
, a new genus of trichomycterid catfishes from the Argentinian Andes, with redescription of
Trichomycterus nigricans
. Ichthyol. Explor. Freshwat. 9(4):347-370. (Ref.
33071
)
IUCN Red List Status (Ref.
130435
)
Not Evaluated
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
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00282 - 0.01550), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.1 ±0.4 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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