Dusky brotulid (Diancistrus fuscus)

Scientific name: Diancistrus fuscus Fowler, 1946

Dusky brotulid (Diancistrus fuscus)

The Dusky brotulid (Diancistrus fuscus) is a marine fish of the family Bythitidae.

Biology

Dorsal spines (total): 0; Dorsal soft rays (total): 74-85; Anal spines: 0; Anal soft rays: 58 - 69; Vertebrae: 43 - 45. Diagnosis: This species is distinguished by the following: Vertebrae 11+32-34=43-45, dorsal fin rays 74-85 (usually >77), anal fin rays 58-69, D/V 6 (rarely 7); eyes moderately large (2.4-3.4% SL); outer pseudoclasper with hook-shaped extension oriented backward at 90? angle and slightly bent outwards, with a rounded tip; inner pseudoclasper short, joined to outer pseudoclasper anteriorly, with supporter, with small hook and wide thin flap at its base; scale patch on cheek with 5-6 scale rows on upper cheek, scales on operculum only above opercular spine, 3-7 scales in 2 rows; head profile slender, broad; otolith length to sulcus length about 2.0, sulcus not inclined.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Diancistrus fuscus
Family
Bythitidae (Viviparous brotulas)
Order
Ophidiiformes (Cusk eels)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
7.0
Environment
Marine; reef-associated
Climate
Subtropical
Distribution
Western Pacific: Japan (Ryukyu Is.), Taiwan to northern Philippines, southwards to about 10?N. Further south, across the equator, iti is replaced by Diancistrus alleni.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: of no interest; aquarium: commercial
Resilience
Low, minimum population doubling time 4.5 - 14 years (Assuming Fec

More other marine fish

See all other marine fish

Sources

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

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