Strong spined silver-biddy (Gerres phaiya)

Scientific name: Gerres phaiya Iwatsuki & Heemstra, 2001

The Strong spined silver-biddy (Gerres phaiya) is a brackish-water fish of the family Gerreidae. Native range: Western Indian Ocean, southwest coast of India; probably also in Bengal Bay and the Andaman Sea.

Biology

Dorsal spines (total): 9; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 7. When fresh, upper surface of head and trunk silvery, golden-brown, grading to silver on abdomen. Pelvic and anal fins yellow, first few rays of pelvic fin with a white distal margin or whitish-hyaline posteriorly; caudal fin yellowish-dusky with slightly whitish lower margin posteriorly, lobes usually broadly rounded posteriorly; dorsal and pectoral fins yellowish-hyaline; trunk with approximately 6-10 vertical dusky bars (about half width of pupil diameter), more apparent when stressed or when preserved. Number of scales between the base of the 5th dorsal fin spine and lateral line 4-4.5. Second dorsal fin spine longest, 23-27% SL (mean 25%). Supraneural bones 3.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Gerres phaiya
Family
Gerreidae (Mojarras)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
13.7
Environment
Marine; brackish; demersal
Climate
Tropical
Distribution
Western Indian Ocean: southwest coast of India; probably also in Bengal Bay and the Andaman Sea.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
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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