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Largefin croaker (Johnius macropterus) fish species and information / pictures of Largefin croaker - Johnius macropterus

Largefin croaker (Johnius macropterus) fish species information

Scientific Name
Johnius macropterus

Common Name
Largefin croaker

Biology
Dorsal spines (total): 11; Dorsal soft rays (total): 29-34; Anal spines: 2; Anal soft rays: 7

Classification

Classified By

Bleeker, 1853

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Drums or croakers (Sciaenidae)

Distribution

Region

Indo-West Pacific

Distribution

Indo-West Pacific: India and Sri Lanka eastward to Thailand and Malaysia and south to New Guinea.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

30 m

Zone

demersal

Environment

Marine; demersal; depth range ? - 30 m

Trophic Level

3.29 s.e. 0.40 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

25.0 cm

Common Length

18.0 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: commercial

Vulnerability

Low vulnerability (22 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