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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 / djupintervall / distribution range
Ekologi
marina djupbottenlevande; djupintervall ? - 2919 m (Ref. 121928). Deep-water
Western Central Indian Ocean: Chagos Archipelago.
Size / Vikt / Age
Könsmognad: Lm ? range ? - ? cm
Max length : 4.7 cm SL (female)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 77; Mjukstrålar i analfenan: 67; Ryggkotor: 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).
Cross section: compressed.
Rare species, known only from a depth of 2,919 m (Ref. 34024).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
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 2025-1)
Threat to humans
Harmless
Human uses
Fiskeri: saknar intresse
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
Trofisk nivå (Ref.
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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