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Teleostei (teleosts) > Ophidiiformes (Cusk eels) > Bythitidae (Livebearing brotulas)
Etymology: Barathronus: Greek, barathron = abyss + ending -ites, that lives there; the Barathron was a deep pit in Athens where criminals were thrown; 1849 +Greek, onos = hake.

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

Marine; bathydemersal; depth range ? - 2919 m (Ref. 121928). Deep-water

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Western Central Indian Ocean: Chagos Archipelago.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 4.7 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 77; Anal soft rays: 67; Vertebrae: 78. This species is distinguished from the other four Barathronus species with a transparent peritoneum by the following set of characters: vomer with two fangs; ventral flexure of the anteriormost vertebrae; anterior gill arch with 20 long rakers; D 77, A 67, pectoral-fin rays 22; vertebrae precaudal 34, total 78; except for black lenses the preserved specimen, it is uniformly white-yellowish (Ref. 121928).

Rare species, known only from a depth of 2,919 m (Ref. 34024).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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Nielsen, J.G., 2019. Revision of the circumglobal genus Barathronus (Ophidiiformes, Bythitidae) with a new species from the eastern North Atlantic Ocean. Zootaxa 4679(2):231-256. (Ref. 121928)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 16 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

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Trophic ecology
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Ecology
Ecology

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Length-weight rel.
Length-length rel.
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Abundance

Life cycle
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Maturity/Gills rel.
Fecundity
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Distribution
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Anatomy
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00813 (0.00246 - 0.02688), b=2.92 (2.67 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

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

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

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

Barathronus affinis Brauer, 1906