Teleostei (teleosts) >
Scombriformes (Mackerels) >
Trichiuridae (Cutlassfishes) > Lepidopodinae
Etymology: Evoxymetopon: Greek, eu = good + Greek, oxys = sharpen + Greek, metopon = brow (Ref. 45335); macrophthalmus: Specific name refers to the large eye of the species..
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic. Deep-water
Distribution
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Northwest Pacific: off Okinawa I., Ryukyu Is., Japan.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 162 cm SL male/unsexed; (Ref. 58273)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 90; Vertebrae: 94. Distinguished from other species with the following characters: upper head profile convex; posterior confluence of frontal ridges not elevated at the nape, resulting in the absence of the sagittal crest; eye 4.5 times in HL; lower hind margin of opercle broadly rounded; pelvic fins reduced to scalelike structure with 2 soft rays on posterior process of basipterygium, its origin below 9th dorsal-fin element; first anal spine single, oval, scalelike, and originating a short distance behind vent (opposite the 34th dorsal-fin soft ray), anterior anal-fin soft rays minute and embedded, barely penetrating skin and not visible externally, while posterior fin supporting rays enlarged and visible externally; anal-fin rays 15, externally visible; dorsal-fin elements 90, 1st spine elongate, sword-shaped, and finely ribbed; pectoral fin rays 12, with shorter anterior and longer posterior rays extending above the lateral line; first gill arch with upper gill rakers 9; vent at about 50% TL; total vertebrae 94; horizontal distance between posterior margin of eye and origin of first dorsal-fin spine short (8.5% HL); preanal length (PL) 49% TL; HL 27.5% PL; upper jaw length 9.5% PL; predorsal length 21% PL (Ref. 58273).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Chakraborty, A., T. Yoshino and Y. Iwatsuki, 2006. A new species of scabbardfish, Evoxymetopon macrophthalmus (Scombroidei: Trichiuridae), from Okinawa, Japan. Ichthyol. Res. 53(2):137-142. (Ref. 58273)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00275 (0.00105 - 0.00724), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 4.4 ±0.7 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
