
Common silver-biddy
Gerres oyena
- Usual depth0–25 m
- Water temperature21–30 °C
- Best monthsJune, August, and November
- How commonOccasional
Photo credit: (c) Bruce Deagle, some rights reserved (CC BY), uploaded by Bruce Deagle · CC BY · iNaturalist
About this species
The common silver-biddy, also known as the blacktip silver biddy, Darnley Island silverbelly, longtail silverbiddy, oceanic silver biddy, shining silver-belly or slender silver belly, is a species of mojarra native to marine and brackish waters of coastal waters of the Indian Ocean and the western Pacific Ocean. It inhabits estuaries, coastal waters and lagoons. This species can reach a length of 30 cm (12 in), though most do not exceed 20 cm (7.9 in). This species is important to local commercial fisheries.
Text from the Wikipedia article “Common silver-biddy”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 35 records
- February: 36 records
- March: 53 records
- April: 47 records
- May: 52 records
- June: 59 records
- July: 47 records
- August: 67 records
- September: 51 records
- October: 58 records
- November: 71 records
- December: 34 records
Depth and water temperature
Depth
Mostly recorded at 0–25 m · Deepest record: 360 m
Water temperature
Recorded in surface water of 21–30 °C
Photos

no rights reserved · CC0 1.0 · iNaturalist 
(c) Julien Renoult, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Leon Perrie, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Nicola Crockford, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Martin Rady, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Common silver-biddy, Slenderspine mojarra, Blacktip Mojarra, Black-tipped Silver-biddy, Blacktip Silver Biddy, common mojarra, common silver-biddy, Common Silver Biddy, Common silver-biddy, Common silverbiddy, Cotton Silverbiddy, Darnley Island Silver-belly, Darnley Island Silverbelly, glined silverbelly, Longtail Silverbiddy, Oceanic Silver-biddy, Oceanic Silver Biddy, Oyena Mojarra, Shining Silver-belly, Singapore silver-biddy, Slender Silver Belly, slenderspine mojarra
Names in 7 more languages
- German
- Schwarzspitzen-Silberling
- Spanish
- Mojarra Común, Mojarra Plateada de Punta Negra
- French
- Blanche à dorsale noire, Blanche commune, Breton blanc, Gerres
- Japanese
- Minamikurosagi, ミナミクロサギ
- Korean
- 남방게레치
- Thai
- ปลาดอกหมากเรียว
- Simplified Chinese
- 奥奈银鲈, 奧奈銀鱸, 奧奈鑽嘴魚, 碗米仔
Other scientific names: Cichla argyrea, Diapterus kapas, Diapterus oyena, Gerreomorpha rostrata, Gerres argyreus, Gerres australis, Gerres carinatus, Gerres kapas, Gerres oynea, Gerres socotranus, Gerres splendens, Gerres vaigiensis, Labrus oeyena, Labrus oyena, Labrus öyena, Smaris oyena, Xystaema kapas, Xystaema oyena
Similar species
deep-bodied mojarraGerres erythrourus
Whipfin silver-biddyGerres filamentosus
longtail silver biddyGerres longirostris
Slender silver-biddyGerres oblongus
common silver bellyGerres subfasciatus
- Long-rayed Mojarra
Gerres macracanthus
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 4,697 open-data records from 1913 to 2023.
- Species data updated October 30, 2026.
Log what you see on your next dive
The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.