Randall's coralbrotula (Diancistrus jackrandalli)

Scientific name: Diancistrus jackrandalli Schwarzhans, M?ller & Nielsen, 2005

Randall's coralbrotula (Diancistrus jackrandalli)

The Randall's coralbrotula (Diancistrus jackrandalli) is a marine fish of the family Bythitidae. Native range: Northwest Pacific, Ryukyu Islands, Japan.

Biology

Dorsal soft rays (total): 76-79; Anal soft rays: 60 - 67; Vertebrae: 40 - 41. The species is distinguished by the following: Vertebrae 11+29-30=40-41, dorsal fin rays 76-79, anal fin rays 60-67; small eyes (1.6-2.1% SL); outer pseudoclasper moderately large, wing- shaped, slightly bent outwards; inner pseudoclasper almost free, bifurcate, with stout hook-like anterior branch and broad flap-like posterior branch; scale patch on cheek with 6-7 rows of small scales on upper cheek, 2 large scales on operculum above opercular spine; head massive, broad; otolith length to height ratio 2.1. This is the only species of the genus which combines small eyes (about 2.1% SL) with presence of scales on the operculum.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Diancistrus jackrandalli
Family
Bythitidae (Viviparous brotulas)
Order
Ophidiiformes (Cusk eels)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
7.9
Depth range
2–4 m (7–13 ft)
Environment
Marine; reef-associated; depth range 2 - 4 m
Climate
Tropical
Distribution
Northwest Pacific: Ryukyu Islands, Japan.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
High, minimum population doubling time less than 15 months (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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