Sharpnose hammer croaker (Johnius borneensis) fish species and information / pictures of Sharpnose hammer croaker - Johnius borneensis

Sharpnose hammer croaker (Johnius borneensis) fish species information

Scientific Name
Johnius borneensis

Common Name
Sharpnose hammer croaker

Biology
Inhabits shallow coastal waters, estuaries, and rivers. In India, matures at the size of 14 to 16 cm TL; attains an average size of 15.8 cm TL, 20.6 cm TL, and 24 cm TL, at the end of 1 year, 1.5 years and 2 years, respectively. Juveniles prefer crustaceans and as they grow , show piscivorous tendency (Ref. 9772). Marketed fresh and dried salted (Ref. 3490).

Classification

Classified By
Bleeker, 1851
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Drums or croakers (Sciaenidae)

Distribution

Region
Indo-West Pacific
Distribution
Indo-West Pacific: Persian Gulf eastward to southern China and Taiwan and northern and northeastern Australia and New Guinea.
Range
30°N - 36°S, 32°E - 155°E

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
0 m
Depth To - meters
132 m
Zone
benthopelagic
Environment
Marine; freshwater; brackish; benthopelagic; depth range 0 - 132 m (Ref. 57178)
Trophic Level
3.14 s.e. 0.35 Based on diet studies.
Occurs in Marine / Salt water
True
Occurs in Brackish water
True
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
34.8 cm
Common Length
20.0 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 (22 of 100)
Resilience
High, minimum population doubling time less than 15 months (K=0.5-0.8)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated