Forktail large-eye bream (Gymnocranius elongatus) fish species and information / pictures of Forktail large-eye bream - Gymnocranius elongatus

Forktail large-eye bream (Gymnocranius elongatus) fish species information

Scientific Name
Gymnocranius elongatus

Common Name
Forktail large-eye bream

Biology
Dorsal spines (total): 10; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 10. Lower edge of eye is intersected by line from snout tip to the middle of the caudal fin fork. Eye diameter usually about equal to the length of the snout. The interorbital space is convex and about equal to eye diameter. The inner surface of the pectoral fin axil is scaleless. Overall color is silver, sometimes slightly brown dorsally, with about eight transverse brown bars on the sides, the first crossing through the eye, the remainder below the dorsal fin and across the caudal peduncle. Scattered blotches and speckling is sometimes evident on sides. Fins are clear to yellow-orange with caudal margins and tips often deep red.

Classification

Classified By
Senta, 1973
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Emperors or scavengers (Lethrinidae)

Distribution

Region
Indo-West Pacific
Distribution
Indo-West Pacific: east Africa and Seychelles to the Solomon Islands, north to southern Japan, south to northern Australia.
Range
35°N - 25°S

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
50 m
Depth To - meters
100 m
Zone
demersal
Environment
Marine; demersal; non-migratory; depth range 50 - 100 m (Ref. 2295)
Trophic Level
3.42 s.e. 0.41 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
35.0 cm
Common Length
25.0 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
Low to moderate vulnerability (32 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated