Christmas viviparous brotula (Paradiancistrus christmasensis), first described by Schwarzhans & Møller, 2011 is a small fish. Adults typically reach 6.80 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 15 to 22 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 Data Deficient.
Dorsal soft rays (total): 78; Anal soft rays: 67; Vertebrae: 43. This species is distinguished by the following characters: vertebrae 11+32=43; dorsal fin rays 78; anal fin rays 67; head with narrow scale patch on cheeks with 3 rows on upper cheek and 2 rows on lower cheek; operculum scaleless; stubby snout profile; lower preopercular pore 1; otolith with undifferentiated, short sulcus, dorsal rim anteriorly expanded, posteriorly depressed, otolith length to otolith height 2.15, otolith length to sulcus length 2.3 .: elongated.
Behavioural data for Christmas viviparous brotula is currently being reviewed.
Marine; benthopelagic; depth range 15 - 22 m . Tropical Indian Ocean, Christmas Island.
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