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Trachinocephalus myops, Snakefish : fisheries
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Trachinocephalus myops
Picture by
Sampaio, C.L.S.
Teleostei (teleosts) >
Aulopiformes
(Grinners) >
Synodontidae
(Lizardfishes) > Synodontinae
Etymology:
Trachinocephalus:
Greek, trachys, -eia, -ys = rough + Greek, kephale = head (Ref.
45335
)
.
More on author:
Forster
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 0 - 400 m (Ref.
110386
), usually 3 - 90 m (Ref.
4472
). Tropical; 40°N - 40°S, 76°W - 154°W
Atlantic Ocean: Western Atlantic Ocean from Cape Cod, Massachusetts to Brazil, including Bermuda, Bahamas, Antilles and Gulf of Mexico). Eastern Atlantic from Mauritania to Gabon, including Saint Helena and Ascension Islands.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 32.6 cm TL male/unsexed; (Ref.
55642
); max. reported age: 7 years (Ref.
36558
)
This species is distinguished from its congeners by the following characters: snout length (LSn) 53.2-117.0% eye diameter (DE), mean 79.1% (vs. mean 40.1% in
T. gauguini
and 74.8% in
T. trachinus
); LSn 13.5-27.0% body depth (DB), mean 21.6 (vs. mean 14.7% in
T. gauguini
); interorbital width 3.4-11.9%, mean 8.9% LH (vs. mean 5.6% in
T. gauguini
); DE 10.8-21.7% LH, mean 15.7% (vs. mean 16·6% in
T. trachinus
); length of the last dorsal-fin ray 7.3-11.6% LS, mean 9·4% (vs. mean 10.1% in
T. trachinus
and 10.8% in
T. gauguini
); anal-fin rays 13-16, mode 15 (vs. mode 14 in
T. gauguini
and 16 in
T. trachinus
); pectoral-fin rays 11-13, mode 12 (vs. mode 11 in
T. gauguini
); lateral-line scales 53-60, mode 57 (vs. mode 56 in
T. gauguini
); predorsal scales 15-20, mode 17 (vs. mode 16 in
T. trachinus
); further differs from
T. gauguini
and
T. trachinus
by deep mitochondrial distances (16.9-17.6 and 15.1-17.8%, respectively) (Ref.
110386
).
Rest on or more often burrow into substrate, leaving eyes exposed (Ref.
4472
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Polanco, F.A., P.A. Acero and R. Betancur-R
, 2016. No longer a circumtropical species: revision of the lizardfishes in the
Trachinocephalus myops
species complex, with description of a new species from the Marquesas Islands. J. Fish Biol. 89(2):1302-1323. (Ref.
110386
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
06 September 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 18.9 - 29, mean 27.3 °C (based on 4584 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00185 - 0.00492), b=3.37 (3.23 - 3.51), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245
).
Trophic level (Ref.
69278
): 4.4 ±0.4 se; based on diet studies.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (K=1.6; tm=2; tmax=7).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (23 of 100).
Price category (Ref.
80766
):
Medium
.
Nutrients (Ref.
124155
): Calcium = 34.5 [11.1, 70.8] mg/100g; Iron = 0.364 [0.127, 0.946] mg/100g; Protein = 15.4 [12.9, 17.8] %; Omega3 = 0.0732 [, ] g/100g; Selenium = 48.8 [18.4, 109.3] μg/100g; VitaminA = 77.6 [17.7, 284.8] μg/100g; Zinc = 0.871 [0.520, 1.341] mg/100g (wet weight);
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