Gymnocranius grandoculis (Valenciennes, 1830)
Blue-lined large-eye bream
Barialava,  Bariadiva,  Tsivaravaramena
Gymnocranius grandoculis
photo by Randall, J.E.

Family:  Lethrinidae (Emperors or scavengers), subfamily: Monotaxinae
Max. size:  80 cm TL (male/unsexed); max.weight: 5,500.0 g
Environment:  reef-associated; depth range 20 - 170 m, non-migratory
Distribution:  Indo-Pacific: East Africa to southeastern Oceania and from Australia northward to Japan. This species has been referred to as Gymnocranius robinsoni in recent literature.
Diagnosis:  Dorsal spines (total): 10-10; Dorsal soft rays (total): 10-10; Anal spines: 3-3; Anal soft rays: 10-10. Description: Horizontal blue lines on the snout are distinctive (Ref. 37816, 48635). Forehead profile is moderately steep. Large adults develop a bony ridge on the nape and a bony shelf over the front part of the eye. The inner surface of the pectoral fin axil without scales. Overall color is silvery with thin brown scale margins. The anterior half of the head is often brown with a series of narrow undulating, longitudinal lines on the cheek and side of the snout. Fins are yellow or orange; caudal fin is frequently dusky brown; a narrow brown bar across the base of pectoral fins. Juveniles under about 25 cm SL often with 5 or 6 dark bars on the side and a dark bar below the eye (Ref. 2295). Body depth 2.4-2.5 in SL (Ref. 90102).
Biology:  Inhabits offshore reefs (Ref. 9710), trawling grounds of the continental shelves and offshore rocky bottoms (Ref. 30573). Juveniles inshore on muddy substrates (Ref. 48635). Solitary or in small groups (Ref. 90102). Feeds mostly on bottom invertebrates and small fishes (Ref. 30573). Potential commercial fish if sufficient stocks can be located (Ref. 9775). Marketed fresh (Ref. 9775); sometimes with a strong and unpleasant flavor (Ref. 11888).
IUCN Red List Status: Least Concern (LC); Date assessed: 09 March 2015 Ref. (120744)
Threat to humans:  harmless
Country info:   
 

Entered by: Luna, Susan M. - 10.11.90
Modified by: Olisa, Kristine Elaine Paz - 15.04.13
Checked by: Garilao, Cristina V. - 18.08.94

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