Barathronus affinis Brauer, 1906

Family:  Bythitidae (Livebearing brotulas)
Max. size:  4.7 cm SL (female)
Environment:  bathydemersal; marine; depth range - 2919 m
Distribution:  Western Central Indian Ocean: Chagos Archipelago.
Diagnosis:  Dorsal soft rays (total): 77-77; Anal soft rays: 67-67; Vertebrae: 78-78. 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).
Biology:  Rare species, known only from a depth of 2,919 m (Ref. 34024).
IUCN Red List Status: Data deficient (DD); Date assessed: 16 August 2019 Ref. (130435)
Threat to humans:  harmless


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