Allen's coralbrotula (Diancistrus alleni), first described by Schwarzhans, Møller & Nielsen, 2005 is a small fish in the family Dinematichthyidae (order Ophidiiformes). Adults typically reach 7.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 5 to 17 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. The species largely solitary in behaviour. On the IUCN Red List, it is classified as Least Concern.
Dorsal soft rays (total): 75 - 84; Anal soft rays: 60 - 70; Vertebrae: 43 - 45. Diagnosis. Vertebrae 11+32-34=43-45, dorsal fin rays 75-84, anal fin rays 60-70; outer pseudoclasper hook-shaped, hook-like extension bent outwards, with massive supporter; inner pseudoclasper anteriorly connected to outer pseudoclasper, stout, fleshy; 1 or 2, rarely 3 large scales on operculum above opercular spine aligned in single row and usually covered by mucus and skin . : elongated; Cross section: compressed.
Behavioural data for Allen's coralbrotula is currently being reviewed.
Marine; reef-associated; depth range 5 - 17 m . Tropical West Pacific: Chagos and Maldives to Java, Australia, New Guinea, the Solomons, Vanuatu, and Samoa.
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