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Pseudancistrus sidereus
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Pseudancistrus sidereus
Picture by
Sabaj Pérez, M.H.
Classification / Names
Common names
|
Synonyms
| Catalog of Fishes(
genus
,
species
) |
ITIS
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CoL
|
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Cloffa
Teleostei (teleosts) >
Siluriformes
(Catfishes) >
Loricariidae
(Armored catfishes) > Hypostominae
Etymology:
Pseudancistrus:
Greek, pseudes = false + Greek, agkistron = hook (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: Venezuela.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 17.6 cm SL male/unsexed; (Ref.
53269
)
Short description
Morphology
|
Morphometrics
Pseudancistrus sidereus
is diagnosed by a unique modification of the ventral plates on the caudal peduncle. In loricariids, the plates of the ventral row on the caudal peduncle are typically bent at an approximately 90° angle to follow the contour of the body. The bend is often the site of a slight keel formed from one or more rows of slightly longer odontodes. In
P. sidereus
, the keel is accentuated by having the dorsal laminae of the plates strongly concave. Although some loricariids may have the dorsal laminae slightly concave, it is much more pronounced in
P. sidereus
.
Pseudancistrus sidereus
can be separated from all other species of the Ancistrini by the presence of the keel mentioned above and by the presence of a single large white to yellow spot located at the center of the posterior lateral plates. The only species with a similar coloration are some
Hypancistrus
and some
Panaque
, both of which have far fewer than 25 teeth per jaw ramus (vs. much more than 25 teeth), some other species of
Pseudancistrus
which have hypertrophied odontodes along the snout in males and females (vs. no hypertrophied snout odontodes), and have the dorsal fin reaching at least the preadipose plate when depressed (vs. about two plates anterior to preadipose plate); and some
Hemiancistrus
and
Peckoltia
which generally have the spots much more diffuse (vs. borders of spots distinct) and have the dorsal fin reaching at least the preadipose plate when depressed (vs. about two plates anterior to preadipose plate) (Ref 53964).
Facultative air-breathing in the genus (Ref.
126274
)
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Armbruster, J.W.
, 2004.
Pseudancistrus sidereus
, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of
Pseudancistrus
. Zootaxa 628:1-15. (Ref.
53269
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
21 August 2020
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
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00712 - 0.03216), b=2.97 (2.80 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (11 of 100).
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- 20 July 2016
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