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Teleostei (teleosts) > Ophidiiformes (Cusk eels) > Dinematichthyidae (Viviparous brotula)
Etymology: Nielsenichthys: Named for Jørgen Nielsen, Copenhagen, ZMUC, in recognition of his many contributions to the biology and systematics of the Ophidiiformes.; pullus: Name from the Latin 'pullus' meaning dark, referring to the dark colour of the fishes; adjectival..
More on authors: Schwarzhans & Møller.

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

Marine; benthopelagic; depth range 5 - 20 m (Ref. 88966). Tropical

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Western Pacific: Indonesia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.8 cm SL male/unsexed; (Ref. 88966)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 84 - 90; Anal soft rays: 59 - 67; Vertebrae: 42 - 43. This species is distinguished by the following set of characters: anterior nostril placed high on snout (nearly half the distance from upper lip to anterior margin of eye); male copulatory organ with 2 pairs of equally large pseudoclaspers connected by thin ligament; pseudoclaspers slender, each with single straight supporter, inner pseudoclasper positioned anterior of outer pseudoclasper; precaudal vertebrae 12; rays on dorsal fin 84-90 and anal fin 59-67; head with scale patch on cheek only, no scales on operculum; upper preopercular pore present; maxilla expanded postventrally; otolith elongate (length to height 2.2-2.3), colliculi separated, ostium approaching close to anterior rim of otolith, ostium length to caudal length 3.3-3.8; size small, up to about 40 mm SL (Ref. 88966).

Cryptic, solitary inhabitant of rocky crevices (Ref. 90102).

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

Main reference Upload your references | References | Coordinator | Collaborators

Schwarzhans, W. and P.R. Møller, 2011. New Dinematichthyini (Teleostei: Bythitidae) from the Indo-west Pacific, with the description of a new genus and five new species. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 27:161-177. (Ref. 88966)

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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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0000 [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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Nielsenichthys pullus Schwarzhans & Møller, 2011