Classification / Names
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Ophidiiformes (Cusk eels) >
Dinematichthyidae (Viviparous brotula)
Etymology: Didymothallus: Name from Greek 'didymos' for double or twofold and 'thallus' for branch in plants, referring to the two supporters of nearly equal length in the single pair of pseudoclaspers; nudigena: Name from Latin 'nudus' meaning naked and 'gena' for cheek; referring to the reduced squamation of the cheeks; noun in apposition.
More on authors: Schwarzhans & Møller.
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
marina bentopelagisk. Tropical; 16°S - 24°S, 113°E - 122°E (Ref. 88966)
Eastern Indian Ocean: NW Australia.
Size / Vikt / Age
Könsmognad: Lm ? range ? - ? cm
Max length : 5.1 cm SL hane/ej könsbestämd; (Ref. 88966); 6.6 cm SL (female)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 78 - 90; Mjukstrålar i analfenan: 57 - 69; Ryggkotor: 40 - 43. This species is distinguished by the following characters: vertebrae 12+28-31=40-43; rays on dorsal fin 78-90, anal fin 57-69, V in D 1.9-2.3; head with few small, non-imbricate scales on upper cheeks only; single (outer) pseudoclasper wing-shaped with two slender supporters, anterior supporter shorter than posterior one with small distal appendix on inner face, posterior supporter curved, hockey-stick shaped; otolith with undivided short sulcus, its centre anterior to centre of otolith, sulcus not inclined, otolith length to otolith height 2.25-2.35, otolith length to sulcus length 1.9-2.1 (Ref. 88966).
Body shape (shape guide): elongated.
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
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: Version 2025-1)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [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).
Trofisk nivå (Ref.
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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