Evoxymetopon macrophthalmus  Chakraborty, Yoshino & Iwatsuki, 2006

Bigeye scabbard fish
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Trichiuridae (Cutlassfishes) > Lepidopinae
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 / Climate / Range Ecology

Marine; benthopelagic.   Deep-water

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 162 cm SL male/unsexed; (Ref. 58273)

Short description 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).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

Northwest Pacific: off Okinawa I., Ryukyu Is., Japan.

Biology     Glossary (e.g. epibenthic)

Main reference Upload your references | References | Coordinator : Parin, Nikolay V. | Collaborators

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.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00275 (0.00105 - 0.00719), b=3.06 (2.84 - 3.28), based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  4.4   ±0.7 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  High vulnerability (59 of 100) .