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Ophidiiformes (Cusk eels) >
Dinematichthyidae (Viviparous brotula)
Etymology: Diancistrus: Greek, di = two + Greek, agkistron = hook (Ref. 45335); manciporus: Named for the species' lack of an upper preopercular pore (Latin 'mancus' = missing and 'porus' = pore).
More on authors: Schwarzhans, Møller & Nielsen.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 15 - 20 m (Ref. 57884). Tropical
Central Pacific: Tongatapu, Tonga.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.3 cm SL male/unsexed; (Ref. 57884); 6.7 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 79 - 84; Anal soft rays: 64 - 67; Vertebrae: 43 - 45. This species is characterized by the following: vertebrae 11+32-34=43-45, dorsal fin rays 79-84, anal fin rays 64-67; outer pseudoclasper with hook-like short and pointed extension and slightly bent distally and with thin supporter; inner pseudoclasper anteriorly connected to outer pseudoclasper, wide and concave due to broad thin flap, strongly anteriorly inclined; no scales on operculum; upper preopercular pore absent (Ref. 57884).
Body shape (shape guide): elongated.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Schwarzhans, W., P.R. Møller and J.G. Nielsen, 2005. Review of the Dinematichthyini (Teleostei, Bythitidae) of the Indo-West-Pacific. Part I. Diancistrus and two new genera with 26 new species. The Beagle, Records of the Museum and Art Galleries of the Northern Territory 21:73-163. (Ref. 57884)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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