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Pseudocetonurus septifer
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Pseudocetonurus septifer
Picture by
Shao, K.T.
Classification / Names
Common names
|
Synonyms
| Catalog of Fishes(
genus
,
species
) |
ITIS
|
CoL
|
WoRMS
|
Cloffa
Teleostei (teleosts) >
Gadiformes
(Cods) >
Macrouridae
(Grenadiers or rattails)
Etymology:
Pseudocetonurus:
Greek, pseudes = false + Greek, ketos = marine monster, whale + Greek, oura = tail (Ref.
45335
)
;
septifer:
From the strongly-developed and distinct septa in the postorbital seismosensory canal (Ref.
41160
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; depth range 340 - 950 m (Ref.
9949
). Deep-water
Northwest Pacific: Taiwan (Ref.
54421
). Eastern Pacific: Nazca and Sala y Gomez ridges and Hawaiian Islands.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 39.0 cm TL male/unsexed; (Ref.
9949
)
Short description
Morphology
|
Morphometrics
Seven branchiostegal rays. Head notably large and broad; preopercle and suborbital bones deep and large, opercle commensurately small; orbit small, 19%-30% HL, diameter much less than broad interorbital; snout high, slightly projecting beyond mouth. Mental barbel small, 10% or less of HL. Gill opening wide, extending forward to below hind end of maxilla; gill membranes loosely and narrowly attached to isthmus. Gill rakers usually 16-17 on inner series of 1st arch. Teeth small, close-set, in narrow tapered band on premaxilla, uniserial on dentary. Scales with numerous small, awl-shaped spinules; no reticulations on anterior field; lateral line scales absent, a series of dark papillae in their place. Vent about halfway between pelvic fin insertion and anal fin origin (usually closer to pelvic insertion), surrounded by a black, oval to teardrop-shaped naked area and preceded by a small, round dermal window of light organ between pelvic fin bases. Pyloric caeca short, 22-24. Color black to dark brown overall (Ref.
54421
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Sazonov, Y.I. and T. Iwamoto
, 1992. Grenadiers (Pisces, Gadiformes) of the Nazca and Sala y Gomez ridges, southeastern Pacific. Proc. Calif. Acad. Sci. 48(2):27-95. (Ref.
9949
)
IUCN Red List Status (Ref.
130435
)
Not Evaluated
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
123201
): 4.5 - 5.7, mean 5.1 °C (based on 18 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00111 - 0.00431), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.5 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low to moderate vulnerability (29 of 100).
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Page last modified by :
mrius-barile
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