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Ungusurculus riauensis  Schwarzhans & Møller, 2007

Riau viviparous brotula
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Ungusurculus riauensis   AquaMaps   Data sources: GBIF OBIS
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Image of Ungusurculus riauensis (Riau viviparous brotula)
Ungusurculus riauensis
Male picture by W. Schwarzhans & P. R. Møller

Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > Ophidiiformes (Cusk eels) > Bythitidae (Viviparous brotulas) > Brosmophycinae
Etymology: Ungusurculus: Name from Latin words 'ungulus' (= claw) and 'surculus' (= grapevine tendril), refers to the functional analogy with the pseudoclaspers and the specific shape of the inner pseudoclasper.;  riauensis: Named for the Riau Archipelago, where the majority of the specimens were obtained..   More on author: Schwarzhans.

Miljö / Klimat / Range Ekologi

; marina revassocierade; djupintervall 0 - 5 m (Ref. 90102).   Tropical, preferred ?

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Western Pacific: restricted to the Indonesian Riau Archipelago and Singapore.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 4.7 cm SL hane/ej könsbestämd; (Ref. 76869); 5.6 cm SL (female)

Short description Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt): 70-77; Mjukstrålar i analfenan: 53 - 61; Ryggkotor: 40 - 42. This species is diagnosed by the following characters: D 70-77, A 53-61, D/A 20-23, V in D 1.9-2.2; vertebrae 12+28-30=40-42; anterior nostril 1/4 distance from upper lip to aggregate distance to anterior margin of eye; free pseudoclaspers 2 pairs, the outer pseudoclasper wingshaped with broad base and distally widened supporter with massive anterior hook, prominent knob on inner face of outer pseudoclasper fitting into opening of inner pseudoclasper, the inner one long, massive, stalked, distally with claw-like, outwardly directed strong spines; cheeks with 5 scale rows on upper part and 3 rows on lower; no upper preopercular pore; otolith moderately elongate, its length to height is 2.0-2.2, pointed anterior tip, expanded posterior tip, sharp postdorsal angle, bent outwards, short sulcus with small ventral indentation at joining of ostium and cauda but completely fused colliculi, its centre anterior to centre of otolith, inclined about 10°, otolith length to sulcus length is 2.1 (Ref. 76869).

Biologi     Ordlista (t.ex. epibenthic)

Cryptic ans solitary, inhabitant of reef crevices in about 0-5 m (Ref 90102).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

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. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans




Human uses

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