Genus Alionematichthys

A genus in the family Dinematichthys with the following combination of characters: anterior nostril placed high on snout at about one-third or less the distance from lip to anterior rim of eye; head with a scale patch on cheeks, in some species also above opercular spine, rarely below opercular spine; male copulatory organ with two pairs of mostly small pseudoclaspers, the outer up to twice as large as inner; inner pseudoclasper with anteriorly oriented pointed lobe containing supporter and fleshy appendix posteriorly; large size, up to 150 mm SL; precaudal vertebrae 10–12, total vertebrae 39–45, dorsal fin rays 71–92, anal fin rays 55–72, V in D 2.0–2.4; upper preopercular pore present or, less commonly, absent; sulcus of otolith with ostium at least twice as long as cauda; maxilla expanded posteroventrally (Møller & Schwarzhans, 2008). 
Author: Bray, D.J. 2019

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Cite this page as:
Bray, D.J. 2019, Alionematichthys in Fishes of Australia, accessed 14 Jul 2024,


Møller, P. R. & Schwarzhans, W. 2008. Review of the Dinematichthyini (Teleostei: Bythitidae) of the Indo-Pacific. Part IV. Dinematichthys and two new genera with descriptions of nine new species. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 24: 87-146.