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Rhadinesthes decimus, Slender snaggletooth
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Slender snaggletooth
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Rhadinesthes decimus
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National Museum of Marine Science and Technology, Taiwan
Teleostei (teleosts) >
Stomiiformes
(Lightfishes and dragonfishes) >
Stomiidae
(Barbeled dragonfishes) > Astronesthinae
Etymology:
Rhadinesthes:
Greek, rhadinos, -e, -on = soft, flexible + Greek, esthes, -es = suit, something used to wra (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 0 - 4900 m (Ref.
58018
). Deep-water; 65°N - 46°S, 180°W - 180°E
Eastern Atlantic: Bay of Biscay to Mauritania and off Namibia; reported from Iceland (Ref.
12462
). Also tropical Indian Ocean, eastern and western South Pacific, and central North Pacific.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 41.0 cm SL male/unsexed; (Ref.
4465
)
Short description
Morphology
|
Morphometrics
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 11-13;
Anal
spines
: 0;
Anal
soft rays
: 18 - 21. Teeth on upper jaw slender, all short, widely spaced; 10 to 12 on premaxillary, 14 to 30 teeth on maxillary. No well-developed canines in jaws. Pelvic insertion nearer to tip of snout than to caudal base. Dorsal origin well behind pelvic insertion. Dorsal adipose fin absent.
An oceanic (Ref.
2802
) and mesopelagic-bathypelagic species (Ref.
4465
). Usually found deeper than 500 m during the day (Ref.
2802
). Feeds on midwater fishes and crustaceans (Ref.
2802
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Gibbs, R.H. Jr.
, 1990. Astronesthidae. p. 300-307. 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.
4465
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
21 May 2013
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
): 0.2 - 7.9, mean 3.8 °C (based on 1262 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00417 (0.00171 - 0.01014), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.1 ±0.68 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
): Moderate vulnerability (40 of 100).
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- 20 July 2016
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