Blue-lined large-eye bream (Gymnocranius grandoculis) fish species and information / pictures of Blue-lined large-eye bream - Gymnocranius grandoculis

Blue-lined large-eye bream (Gymnocranius grandoculis) fish species information

Scientific Name
Gymnocranius grandoculis

Common Name
Blue-lined large-eye bream

Biology
Dorsal spines (total): 10; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 10. 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.

Classification

Classified By
Valenciennes, 1830
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Emperors or scavengers (Lethrinidae)

Distribution

Region
Indo-Pacific
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.
Range
35°N - 30°S

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
20 m
Depth To - meters
170 m
Zone
reef-associated
Environment
Marine; reef-associated; non-migratory; depth range 20 - 170 m (Ref. 12260)
Trophic Level
3.43 s.e. 0.48 Based on diet studies.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
True
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
80.0 cm
Common Length
64.0 cm
Phylogenetic Diversity Index
PD50 = 0.5039 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: minor commercial
Vulnerability
Moderate vulnerability (42 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.23)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated