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Diplophos taenia, Pacific portholefish
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Diplophos taenia
Picture by
Dubosc, J.
Teleostei (teleosts) >
Stomiiformes
(Lightfishes and dragonfishes) >
Gonostomatidae
(Bristlemouths)
Etymology:
Diplophos:
Greek, diploos, = double + Greek, phos = light
.
More on author:
Günther
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 0 - 1594 m (Ref.
74511
), usually 0 - 800 m (Ref.
4769
). Deep-water; 40°N - 30°S
Cosmopolitan. Eastern Atlantic: Portugal (Ref.
4769
) south to Gulf of Guinea (Ref.
4463
); Namibia and South Africa (Ref.
3991
). Northwest Atlantic: Canada (Ref.
5951
). Western Atlantic and Indo-Pacific: in tropical and subtropical waters. Eastern Pacific: California Current region (Ref.
35800
); Chile (Ref.
9068
). South China Sea (Ref.74511).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 27.6 cm SL male/unsexed; (Ref.
4463
); common length : 20.0 cm SL male/unsexed; (Ref.
47377
)
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 10-11;
Anal
spines
: 0;
Anal
soft rays
: 59 - 72;
Vertebrae
: 89 - 99. Black-brown dorsally, flanks silver; fins colorless (Ref.
3991
). Branchiostegal rays: 12-14 (Ref.
35800
). Slender form, high anal-ray and photophore counts (Ref.
37473
).
Mesopelagic at 15-650 m (Ref.
58302
). Exhibit diel vertical migrations, juveniles and adults found at 300-800 m by day and often reach the surface at night (Ref.
4769
). Early stages at 450-610m (Ref.
035800
). Oviparous, with planktonic eggs and larvae (Ref.
35800
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Oviparous (Ref.
35800
).
Quéro, J.-C., J.C. Njock and M.M. de la Hoz
, 1990. Gonostomatidae. p. 283-292. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref.
4463
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
22 May 2013
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
): 8.2 - 28.8, mean 26 °C (based on 8446 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00141 (0.00054 - 0.00368), b=3.07 (2.85 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.2 ±0.40 se; based on food items.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (24 of 100).
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