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Diceratias bispinosus, Two-rod anglerfish
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Diceratias bispinosus
Picture by
Randall, J.E.
Teleostei (teleosts) >
Lophiiformes
(Anglerfishes) >
Diceratiidae
(Double anglers (Ref. 07463) or Doublespine Seadevils (Ref. 86949))
Etymology:
Diceratias:
Greek, di = two, double + Greek, keras or keratos = horn, horned (referring to the two conspicuous dorsal-fin spines in the larvae and young females) (Ref.
86949
)
.
More on author:
Günther
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 533 - 2306 m (Ref.
86949
). Deep-water
Indo-Pacific: Bay of Bengal, Papua New Guinea and the Philippines.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 11.2 cm SL male/unsexed; (Ref.
39830
)
A species of
Diceratias
with esca having distinct anterior and posterior appendages. Distinguishing characteristics of metamorphosed female: relatively small esca, width about equal to length; low rounded terminal escal papilla; well developed anterior and posterior escal appendages, usually bearing small secondary filaments; bulbous anterior escal appendage, sometimes branched; laterally compressed posterior escal appendage, row of small secondary filaments along outer margin, at most 5; posterobasal margin of terminal papilla with escal pore; lower jaw with 14-65 teeth, upper jaw with 18-99 teeth; vomerine teeth 4-9 (Ref.
86949
).
Specimens captured in closing trawls or taken in open nets (Ref.
86949
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Kailola, P.J.
, 1987. The fishes of Papua New Guinea. A revised and annotated checklist. Vol. 1. Myxinidae to Synbranchidae. Research Bulletin No. 41. Department of Fisheries and Marine Resources, Port Moresby, Papua New Guinea. 194 p. (Ref.
6993
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
11 October 2018
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 2.8 - 6.8, mean 4.5 °C (based on 969 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.6406 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.2 ±0.73 se; based on food items.
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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