Large-scale croaker (Johnius heterolepis) fish species and information / pictures of Large-scale croaker - Johnius heterolepis

Large-scale croaker (Johnius heterolepis) fish species information

Scientific Name
Johnius heterolepis

Common Name
Large-scale croaker

Biology
Dorsal spines (total): 11; Dorsal soft rays (total): 25-28; Anal spines: 2; Anal soft rays: 7. Greenish or bluish grey above, silvery below; fins yellowish (Ref. 9772).

Classification

Classified By
Bleeker, 1873
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Drums or croakers (Sciaenidae)

Distribution

Region
Indo-Pacific
Distribution
Indo-Pacific: Malaysia, Indonesia around the coasts of Sumatra and Java, including Singapore.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
benthopelagic
Environment
Marine; benthopelagic
Trophic Level
3.24 s.e. 0.39 Based on size and trophs of closest relatives
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
15.0 cm
Common Length
12.0 cm
Phylogenetic Diversity Index
PD50 = 0.5000 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 vulnerability (15 of 100)
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated