Hoplostethus robustispinus Moore & Dodd, 2010
Thickspine roughy
Hoplostethus robustispinus
photo by Moore, J.

 Family:  Trachichthyidae (Slimeheads)
 Max. size:  35.4 cm SL (male/unsexed)
 Environment:  demersal; depth range - 660 m
 Distribution:  Northwestern Pacific: Philippines (east of Calagua Islands) and Japan.
 Diagnosis:  Dorsal spines (total): 6-6; Dorsal soft rays (total): 14-14; Anal spines: 3-3; Anal soft rays: 9-9; Vertebrae: 27-27. Hoplostethus robustispinus has extremely thickened fin spines, 56 digitiform pyloric caeca, a bright red body, fins with no black pigment in any fin membranes, no silvery flanks, a long trunk (VA distance is greater than almost all other species) and eyes more dorsally placed, with the upper margin dorsal to preopercular ridges and level with the post-temporal spine (Ref. 84133).
 Biology: 
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:  Type locality, east of Calagua Islands, YPM 10130 (holotype of Hoplostethus robustispinus, 34.05 cm SL, male) (Ref. 84133).

 Entered by: Busson, Frédéric - 15.05.10
 Modified by: Busson, Frédéric - 22.01.13

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