Bigeye scabbard fish (Evoxymetopon macrophthalmus)

Scientific name: Evoxymetopon macrophthalmus Chakraborty, Yoshino & Iwatsuki, 2006

The Bigeye scabbard fish (Evoxymetopon macrophthalmus) is a marine fish of the family Trichiuridae. Native range: Northwest Pacific, off Okinawa I., Ryukyu Is., Japan.

Biology

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

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Evoxymetopon macrophthalmus
Family
Trichiuridae (Cutlassfishes)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
162
Environment
Marine; benthopelagic
Climate
Deep-water
Distribution
Northwest Pacific: off Okinawa I., Ryukyu Is., Japan.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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