Glyptophidium japonicum Kamohara, 1936
Japanese cusk
photo by Graham, K.

Family:  Ophidiidae (Cusk-eels), subfamily: Neobythitinae
Max. size:  22 cm SL (male/unsexed)
Environment:  benthopelagic; marine; depth range 145 - 595 m
Distribution:  Western Pacific: Japan to off Northwest Australia.
Diagnosis:  Dorsal soft rays (total): 123-134; Anal soft rays: 98-108. Prominent head and body with an attenuate caudal part; head bones with large, thin crests; eye equal to or greater than length of snout; opercular spine broad, flat and weak; basibranchial with 2 median and a pair of tooth patches; long gill rakers on anterior gill arch 21-26 (Ref. 34024). Caudal fin rays 8-10; stem of pseudobranchial filament pale, filaments 10-15; anterior anal fin ray below 28th-31st dorsal fin rays (Ref. 34024).
Biology:  A benthic species found on the continental slope (Ref. 75154). Common species (Ref. 34024). Oviparous, with oval pelagic eggs floating in a gelatinous mass (Ref. 205).
IUCN Red List Status: Least Concern (LC); Date assessed: 16 August 2019 Ref. (130435)
Threat to humans:  harmless


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