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Eustomias bimargaritatus
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drawing shows typical species in Stomiidae.
Teleostei (teleosts) >
Stomiiformes
(Lightfishes and dragonfishes) >
Stomiidae
(Barbeled dragonfishes) > Melanostomiinae
Etymology:
Eustomias:
Greek, eu = good + Greek, stoma = mouth (Ref.
45335
)
.
More on authors:
Regan
&
Trewavas
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 0 - 2000 m (Ref.
11333
). Tropical; 30°N -
Eastern Central Atlantic: known only from one record northwest of Cape Verde. Western Atlantic: west of 45°W between 28°N-20°N, off Puerto Rico, the Caribbean Sea south off Cuba.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 14.3 cm SL male/unsexed; (Ref.
4468
); 20.0 cm SL (female)
Short description
Morphology
|
Morphometrics
Two terminal bulbs separated by a short interspace, 0.6-1.7 times length of distal bulb. Barbel length 58-70% SL in specimens larger than 9 cm. Terminal filament 10-23% SL, except in some small specimens, with 2-3 (often 2) prominent branches arising closely together at 1-5 distal-bulb lengths, from the distal bulb in specimens to 11.4 cm SL (at 10 bulb lengths in a 20 cm specimen). Stem of filament proximal to major branches with widely-spaced tiny bulblets and without short basal branches; all long branches with very small widely-spaced bulblets (bulblets larger and more conspicuous in a 20 cm specimen). Barbel without melanophores (rarely very sparse pigment on axis of stem or filament). Middorsal paired spots between occiput and dorsal-fin origin probably 8, often diffuse or obscure (Ref.
11333
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Gibbs, R.H. and M.A. Barnett
, 1990. Melanostomiidae. p. 308-337. 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.
4468
)
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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Estimates based on models
Preferred temperature (Ref.
123201
): 5.8 - 17.7, mean 10.1 °C (based on 219 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00117 - 0.00783), b=3.12 (2.89 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.5 ±0.80 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 (14 of 100).
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Page last modified by :
mrius-barile
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