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Teleostei (teleosts) > Ophidiiformes (Cusk eels) > Dinematichthyidae (Viviparous brotula)
Etymology: Diancistrus: Greek, di = two + Greek, agkistron = hook (Ref. 45335); niger: Named for its black color..
More on authors: Schwarzhans, Møller & Nielsen.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 2 - 10 m (Ref. 90102). Tropical

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Western Pacific: (Vogelkop Peninsula, Irian Jaya, New Guinea (Indonesia).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 4.5 cm SL male/unsexed; (Ref. 57884); 4.4 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 69 - 76; Anal soft rays: 52 - 59; Vertebrae: 41 - 43. This species is characterized by the following: vertebrae 11+30-32=41-43, dorsal fin rays 69-76, anal fin rays 52-59; large eyes (3.0-3.6% SL); outer pseudoclasper large, broad, ear-lobe shaped, opening ventrally; inner pseudoclasper a fleshy appendix at anterior-inner rim of outer pseudoclasper, without supporter; no scales on operculum; head is compressed, blunt; otoliths elongate, ratio otolith length: height 2.3, anterior and posterior tips of otolith almost equally pointed; color dark grey to black when preserved (Ref. 57884).

Solitary inhabitant of coral reef crevices between about 2-10 m depth, cryptic (Ref 90102).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Schwarzhans, W., P.R. Møller and J.G. Nielsen, 2005. Review of the Dinematichthyini (Teleostei, Bythitidae) of the Indo-West-Pacific. Part I. Diancistrus and two new genera with 26 new species. The Beagle, Records of the Museum and Art Galleries of the Northern Territory 21:73-163. (Ref. 57884)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 15 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

FAO - Publication: search | FishSource |

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Trophic ecology
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Anatomy
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Brains
Otoliths

Physiology
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Visual pigment(s)
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.5 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Diancistrus niger Schwarzhans, Møller & Nielsen, 2005