Grammonus robustus Smith & Radcliffe, 1913
photo by Okamoto, M.

 Family:  Bythitidae (Viviparous brotulas), subfamily: Bythitinae
 Max. size:  21 cm SL (male/unsexed)
 Environment:  bathydemersal; depth range 45 - 345 m
 Distribution:  Indo-West Pacific: Red Sea, Japan, East China Sea, and the Philippines.
 Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 75-87; Anal spines: 0-0; Anal soft rays: 50-62. Body color reddish-brown. Head large and broad. Scales present on head. Opercular spine small, but with a sharp pointed tip. Attains 21 cm SL.
 Biology:  Uncommon species found on soft bottom (Ref. 34024). Ref. 9942 gives maximum depth to be 1,260 m.
 IUCN Red List Status:   (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Garilao, Cristina V. - 10.11.95
 Modified by: Garilao, Cristina V. - 09.10.00

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