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Teleostei (teleosts) > Aulopiformes (Grinners) > Synodontidae (Lizardfishes) > Synodontinae
Etymology: Trachinocephalus: Greek, trachys, -eia, -ys = rough + Greek, kephale = head (Ref. 45335); gauguini: Named for the French painter Paul Gauguin (1848-1903), who died in the Marquesas Islands on 8 May 1903..

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 26 - 75 m (Ref. 110386). Tropical

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Eastern Central Pacific: Marquesas Islands, where it is probably endemic.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 12.5 cm SL male/unsexed; (Ref. 110386)

Short description Morphology | Morphometrics

This species is distinguished from its congeners by the following characters: length of snout (SLn) 6,7-10.0% head length (HL), mean 7.8 (vs mean 12.3% in T. trachinus; 12.1% in T. myops); body depth SLn 12.6-18.9%, mean 14.7% (vs. mean 21.2% in trachinus; 21.6% in myops); eye diameter SLn 31.6-51.7%, mean 40.1% (vs. 74.8% in trachinus; 79.1% in myops); interorbital width 4·0-6·7%, mean 5·6% HL (vs. mean 8·7% in trachinus; 8·9% in myops); anal-fin rays 14-16, mode 14 (vs. mode 16 in trachinus; 15 in myops); pectoral-fin rays 11-12, mode 11 (vs. mode 12 in the two species); lateral-line scales 56-59, mode 56 (vs. mode 57 in myops); further differs from trachinus and myops by deep mitochondrial distances (15.7-19.0 and 16.9-17.6%, respectively) (Ref. 110386).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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: 28 June 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00457 (0.00217 - 0.00962), b=3.18 (3.00 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.9 ±0.7 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Trachinocephalus gauguini Polanco Fernandez, Acero P. & Betancur-R., 2016