Large-eye croaker (Johnius plagiostoma)

Scientific name: Johnius plagiostoma Bleeker, 1849

The Large-eye croaker (Johnius plagiostoma) is a freshwater fish of the family Sciaenidae. Native range: Indo-West Pacific, Bay of Bengal to Borneo and Java, and north to Viet Nam.

Biology

Dorsal spines (total): 10 - 12; Dorsal soft rays (total): 28-31; Anal spines: 2; Anal soft rays: 6 - 8. Eye large, about 30 % of head length; mental pores in 3 pairs, the first open at front of chin, separated by symphysis; teeth well differentiated into large and small in both jaws. Gill rakers slender, equal to or slightly shorter than gill filaments at angle of arch, 14 to 17 on lower limb. Second anal spine long, stiff, 40 to 50 % of head length. Swim bladder hammer-shaped, with about 13 pairs of arborescent appendages along its sides, the first entering head beyond transverse septum and sending a palmate branch to the front of pectoral arch. Sagitta (large earstone) with a tadpole-shaped impression, the head of which has its long axis lying obliquely to that of sagitta and the tail expanded and deepened as a hallow cone connected with the head by a narrow groove.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Johnius plagiostoma
Family
Sciaenidae (Drums or croakers)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
10.0
Common length
8.0
Environment
Marine; freshwater; brackish; benthopelagic
Climate
Tropical
Distribution
Indo-West Pacific: Bay of Bengal to Borneo and Java, and north to Viet Nam.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: of no interest
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.

Last updated