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Setting up your tank

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Smooth croaker (Johnius laevis) fish species and information / pictures of Smooth croaker - Johnius laevis

Smooth croaker (Johnius laevis) fish species information

Scientific Name
Johnius laevis

Common Name
Smooth croaker

Biology
Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 29-34; Anal spines: 2; Anal soft rays: 7

Classification

Classified By

Sasaki & Kailola, 1991

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Drums or croakers (Sciaenidae)

Distribution

Region

Indo-West Pacific

Distribution

Indo-West Pacific: along the coasts of Australia and Papua New Guinea, from about 124? to 144?E. Record from Java and Sumatra is more likely referable to other related species.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

45 m

Depth To - meters

60 m

Zone

demersal

Environment

Marine; demersal; depth range 45 - 60 m (Ref. 9772)

Trophic Level

3.23 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

14.0 cm

Common Length

11.0 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

Data deficient (DD)