Trewavas croaker (Johnius trewavasae)

Scientific name: Johnius trewavasae Sasaki, 1992

The Trewavas croaker (Johnius trewavasae) is a marine fish of the family Sciaenidae. Native range: Western Pacific, Taiwan, Hong Kong, Shanghai and Singapore.

Biology

Dorsal spines (total): 10 - 11; Dorsal soft rays (total): 24-27; Anal spines: 2; Anal soft rays: 7 - 8. Small species with a moderately elongate body. Dark mottled pattern dorsally, creamy white ventrally; scale pockets on dorsal side of head and body with broad, dark margins; spinous dorsal fin black, pectoral fins grey, pelvic fins pale.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Johnius trewavasae
Family
Sciaenidae (Drums or croakers)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
15.0
Common length
14.0
Depth range
40 m (131 ft)
Environment
Marine; benthopelagic; depth range ? - 40 m
Climate
Tropical
Distribution
Western Pacific: Taiwan, Hong Kong, Shanghai and Singapore.
Conservation status (IUCN)
Data deficient (DD)
Threat to humans
Harmless
Uses
Fisheries: minor commercial
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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