Common Silver Biddy

Common Silver Biddy
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Perciformes
Family:	Gerreidae
Genus:	Gerres
Species:	G. oyena
Binomial name
Gerres oyena Forsskål, 1775

The Common silver biddy or Gerres oyena is a silver biddy fish found in the coastal waters of Southern Japan.^[1] A species of bony fish belonging to the genus Gerres within the Gerreidae family.

Reproduction

Based on the seasonal reproductive cycle of the species, ovary development of the females occurs from March to September while the testes development of the males occurs between March an August. For both sexes, the maximal development occurs during April and May. Using the gonadosomatic index (GSI), the minimum standard length (SL) at sexual maturity was 89.7 mm for the females and 81.4 mm for males. The size at which 50% of individuals were sexually mature was 104 mm standard length in females and 92 mm standard length in males.^[1]

See also

• Japanese silver biddy

References

1. ^ ^{a b} Kanak, Khaled and Katsunori Tachihara. Reproductive biology of common silver biddy Gerres oyena in Okinawa Island of southern Japan, Journal Fisheries Science, Springer Japan Issue, Volume 74, Number 2 , pages 265-275, March, 2008