Hydrolagus marmoratus Didier, 2008
Hydrolagus marmoratus
photo by Graham, K.

Family:  Chimaeridae (Shortnose chimaeras or ratfishes)
Max. size:  80.1 cm TL (male/unsexed)
Environment:  bathydemersal; marine; depth range 548 - 995 m
Distribution:  Western Pacific: Australia.
Diagnosis:  This chimaeroid fish has a ventral caudal fin that that is not indented at its origin to form a separate anal fin and is distinguished from its congeners by the following characters: color of body pale brown with prominent reticulations on sides, dorsal fin and spine whitish basally; the dorsal-fin spine is slightly shorter than or subequal in height of first dorsal fin, while the pelvic fins somewhat rectangular in shape (not broadly rounded); pelvic claspers of males are mostly pale, divided for the distal 2/3 of their length (Ref. 76967).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 19 February 2015 Ref. (130435)
Threat to humans:  harmless
Country info:  Type locality, east of Hawks Nest, New South Wales, AMS I 29762-003 (holotype of Hydrolagus marmoratus, 71 cm TL, adult male). Known from the continental slope, off eastern Australia from the Whitsunday Group in Queensland (18˚58′ S, 150˚29′ E) south to off Bulli in New South Wales (34˚15′ S, 151˚31′ E), 548-995 m.


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