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Porogadus guentheri
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Porogadus guentheri
Picture by
Shao, K.T.
Teleostei (teleosts) >
Ophidiiformes
(Cusk eels) >
Ophidiidae
(Cusk-eels) > Neobythitinae
Etymology:
Porogadus:
Greek, poros = porous + Latin, gadus = a fish, cod? (Ref.
45335
)
;
guentheri:
Named for Dr. Albert Günther.
.
More on authors:
Jordan
&
Fowler
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 805 - 1530 m (Ref.
34024
). Deep-water
Northwest Pacific: Japan and the East China Sea.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 21.0 cm SL male/unsexed; (Ref.
559
)
Short description
Morphology
|
Morphometrics
This species is distinguished by the following characters: precaudal vertebrae 16-17; first gill arch with long gill rakers 18-21, broad, bladed; HL:HD 1.71-1.79; most head spines are strong: on ethmoidal, prefrontal, interorbital, supraorbital, sphenotic, supratemporal, inner and outer posttemporal, inner preopercular rim, lacrimal with ridge, and weak on outer preopercular rim, absent on 5th infraorbital; opercular spine is sharp, extruding; maxilla with single row of scales along upper margin in front of supramaxilla; the large opercular flap with ridges; lower lateral line pores until beginning of anal fin 16; narrow dentition patch on vomer with few or 1-2 (rarely 3) rows of teeth; palatines with moderately broad dentition patch (3-6 rows of teeth); otolith with single colliculum but indentation at ventral margin and rarely separate colliculi; OL:OH = 1.45-1.64; OL:TCL = 1.87-2.52 (Ref.
125143
).
A benthopelagic species at bathyal depth (Ref.
56809
). Uncommon species (Ref.
34024
). Oviparous, with oval pelagic eggs floating in a gelatinous mass (Ref.
205
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Schwarzhans, W.W. and P.R. Møller
, 2021. Revision of the ‘dragon-head’ cusk eels of the genus
Porogadus
(Teleostei: Ophidiidae), with description of eight new species and one new genus. Zootaxa 5029(1):001-096. (Ref.
125143
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
15 August 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Estimates based on models
Preferred temperature (Ref.
123201
): 3.3 - 4.9, mean 4.3 °C (based on 37 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00110 (0.00041 - 0.00296), b=3.08 (2.85 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.5 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (16 of 100).
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