Melamphaes xestoachidus Kotlyar, 2011
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 Family:  Melamphaidae (Bigscale fishes or ridgeheads)
 Max. size:  8.7 cm SL (male/unsexed)
 Environment:  bathypelagic; depth range 2400 - 3450 m
 Distribution:  Northwestern Pacific Ocean, eastwards of the Kurils Islands.
 Diagnosis:  The species is characterized by 22–23 rakers on the first gill arch, 30 vertebrae (12 abdominal vertebrae), the haemal arch of the first caudal vertebra is without a spur; D III 14–15; P 16; seven soft rays in the ventral fin; ventral fin starts from the vertical line of the posterior margin of the pectoral fin basement; the anal fin starts from the vertical line of the last ray of the dorsal fin; eight scales are on the operculum (Ref. 87971).
 Biology: 
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Capuli, Estelita Emily - 19.10.11
 Modified by: Busson, Frédéric - 20.10.11

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