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Teleostei (teleosts) > Ophidiiformes (Cusk eels) > Bythitidae (Livebearing brotulas)
Etymology: More on author: Nielsen.

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

Marine; bathydemersal; depth range 2610 - 4440 m (Ref. 105129). Deep-water

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

West and East Central Atlantic: Sargasso Sea and the Caribbean Sea. Pacific Ocean: Australia (Ref, 128809).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 10.3 cm SL male/unsexed; (Ref. 128809); 10.9 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 75 - 81; Anal soft rays: 53 - 56; Vertebrae: 68 - 71. This species is distinguished from is congeners by the following characters: first gill arch with 3-4 developed gill rakers; D 75-81; precaudal vertebrae 31-32; anal fin origin below vertebrae 32-36. Colouration: black pigmentation laterally in the roof of the mouth, very distinct from the outside as a black area half the head length between the eye and the upper jaw (Ref. 105129).

A rare species (Ref. 34024). Viviparous (Ref. 6527). All four male specimens with developed reproductive organ indicating internal fertilization, and a tentatively referred specimen is a female with distended, 15 mm long ovaries containing large eggs (0.7 mm) (Ref. 105129). A ripe female with eggs (ca. 1 mm diameter), caught in Hunter Commonwealth Marine Reserve, NSW, is the largest known specimen (Ref. 128809).

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

Main reference Upload your references | References | Coordinator | Collaborators

Nielsen, J.G., 2015. Revision of the aphyonid genus Aphyonus (Teleostei: Ophidiiformes) with a new genus and two new species. Zootaxa 4039(2):323-344. (Ref. 105129)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 08 July 2014

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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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00457 (0.00179 - 0.01169), b=3.10 (2.87 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.4 ±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).

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