Scientific Name
Sillago japonica

Common Name
Japanese sillago

Biology
Dorsal spines (total): 12; Dorsal soft rays (total): 21-23; Anal spines: 2; Anal soft rays: 22 - 24; Vertebrae: 35. Swim bladder with anterior projecting extensions and a single posterior extension. Body is greenish gray above, the dorsal part of the head being the darker, and whitish below. The fins are mostly hyaline; the membrane between the first to the third dorsal fin spines with minute dark brown dots; the margins of the dorsal fin with a few dark brown spots. The caudal fin with dark margins.

Classification

Classified By

Temminck & Schlegel, 1843

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Smelt-whitings (Sillaginidae)

Distribution

Region

Northwest Pacific

Distribution

Northwest Pacific: Japan, Korea, China, and Taiwan. Possibly to the Philippines. Commonly misidentified as Sillago sihama.

Range

45°N - 21°N, 116°E - 149°E

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

30 m

Zone

demersal

Environment

Marine; demersal; non-migratory; depth range 0 - 30 m (Ref. 6205)

Trophic Level

3.21 s.e. 0.32 Based on diet studies.

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

30.0 cm

Common Length

22.0 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; aquaculture: likely future use

Vulnerability

Low vulnerability (24 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)