Ragfish (Icosteus aenigmaticus)

Scientific name: Icosteus aenigmaticus Lockington, 1880

Ragfish (Icosteus aenigmaticus)

The Ragfish (Icosteus aenigmaticus) is a marine fish of the family Icosteidae. Native range: North Pacific, Japan to southeastern Alaska and to Point Loma, southern California, USA.

Biology

Dorsal spines: 0; Dorsal soft rays: 52-55; Anal spines: 0; Anal soft rays: 34 - 40. Pectorals rounded, pedunculate. Generally of a chocolate color. Young more robust, with an expanded and rounded caudal fin, 5 pelvic rays, and a brown and yellow irregularly blotched with faint purple color, dusky on fins.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Icosteus aenigmaticus
Family
Icosteidae (Ragfish)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
213
Depth range
0–1420 m (0–4659 ft)
Environment
Marine; bathypelagic; depth range 0 - 1420 m, usually 18 - 732 m
Climate
Deep-water
Distribution
North Pacific: Japan to southeastern Alaska and to Point Loma, southern California, USA.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
Low, minimum population doubling time 4.5 - 14 years (K=0.13; Fec=293,000)

Sources

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

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