Teleostei (teleosts) >
Ophidiiformes (Cusk eels) >
Dinematichthyidae (Viviparous brotula)
Etymology: Eusurculus: Name from Latin and Greek 'eu' for good or real and Latin 'surculus' for grapevine tendril, refers to the functional analogy with the pseudoclaspers and the specific shape of the inner pseudoclasper; pristinus: Name from Latin 'pristinus' for ancient or original, refers to the simpler pattern of the inner pseudoclasper when compared to the sucker-disk of E. andamanensis and E. pistillum; noun in apposition.
More on authors: Schwarzhans & Møller.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal. Tropical
Western Pacific, Bismarck Sea to the Solomons and Vanuatu.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.5 cm SL male/unsexed; (Ref. 76869); 4.6 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 74 - 86; Anal soft rays: 58 - 70; Vertebrae: 41 - 44. This species is distinguished by the following characters: D 74-86, A 58-70, D/A 18-27, V in D 2.0-2.3; vertebrae 11-12+30-33=41-44, anterior nostril located 1/4 to 1/5 distance from upper lip to aggregate distance to anterior margin of eye; free pseudoclaspers 2 pairs, outer pseudoclasper wing-shaped with moderately broad base and distally widened supporter with strong anterior hook (covered by ligament), the inner one is stalked, with slightly widened base and miniature sucker-disk with two small hooks; 5-8 scale rows on upper part, 3-4 rows on lower part of the cheek; otoliths with distinct ostium and cauda, partly fused colliculi, otolith length to height 2.0-2.1, ostial colliculum length to caudal colliculum length 3.5-5 (Ref. 76869).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Schwarzhans, W. and P.R. Møller, 2007. Review of the Dinematichthyini (Teleostei: Bythitidae) of the Indo-west Pacific. Part III. Beaglichthys, Brosmolus, Monothrix and eight new genera with description of 20 new species. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 23:29-110. (Ref. 76869)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [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).
Trophic level (Ref.
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
