New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

Diadromous Least Concern 🌡️ Tropical

Whipfin silverbiddy

Gerres filamentosus Cuvier, 1829
Max Length
39 cm
Max Weight
-
Lifespan
8 yrs
Trophic Level
3.3
Depth
1–50 m
Climate
Tropical
Resilience
Medium
Vulnerability
32.00/100
Typical Length
15 cm
Depth Zone
demersal

📖 Overview

Adults are coastal inhabitants found on soft bottoms , over sandy substrate . Juveniles are found in brackish mangrove estuaries, sometimes enter fresh water , lakes , tidal creeks and lower freshwater reaches of rivers . Feed on small crustaceans, polychaetes and forams on sand or muddy-sand bottoms , worms and insect larvae . Length at first reproduction was reported to be around 12 cm SL, for a population in a South African estuary (D. Woodland, pers.comm. 07/13). Salted or made into fish sauce.

Scientific Name
Gerres filamentosus
Authority
Cuvier, 1829
Habitat
Diadromous
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
39 cm
Lifespan
8 years
Depth Range
1–50 m
Latitude
35°S – 32°N
Trophic Level
3.3
Resilience
Medium
Vulnerability
32.00/100
Migration
Amphidromous
Water Temp
26–29 °C
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 9; Dorsal soft rays (total): 10 - 11; Anal spines: 2 - 3; Anal soft rays: 7 - 8. : fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Whipfin silverbiddy is currently being reviewed.

🦐 Diet

Diet information for Whipfin silverbiddy is currently being compiled.

🥚 Reproduction

Size at Maturity
19cm TL

Juveniles enter estuaries and mangrove areas at 1 cm SL and stay until they reach maturity, at which stage they move out to sea .

🌍 Habitat & Distribution

Marine; freshwater; brackish; demersal; amphidromous ; depth range 1 - 50 m . Tropical; 26°C - 29°C ; 32°N - 35°S, 31°E - 171°E West Pacific: East Africa and Madagascar to Japan and Australia; New Caledonia (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish ⬇️ Benthic
Migration
Amphidromous
Trophic Level
3.3±0.2
Food Items

small crustaceans, polychaetes and forams on sand or muddy-sand bottoms (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.0123 × L3.05 (TL)
Max TL
39cm
Dorsal Spines
9
Dorsal Rays
11
Anal Spines
3
Anal Rays
8

🌡️ Water Parameters & Tolerance

Temperature Range
26–29°C
Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2016

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
32.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Latitude Range
32°N – 35°S
Described By
Cuvier, 1829

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Flagfin Mojarra · Long-rayed silver biddy · Thread-fin Silver-belly · threadfin silverbelly · Threadfin Silverbiddy · Whipfin Mojarra · whipfin silver-biddy · Whipfin silver-biddy, Whipfin silverbiddy · Whipfin Silverbelly · Whipfin Silverbiddy
🇸🇦Arabic Badha
🌍CES ostnušíček dlouhotrnný
🇫🇷French Blanc à long filament · Blanche fil
🇯🇵Japanese Itohikisagi · イトヒキサギ
🇵🇹Portuguese Mojarra-filamentosa
🇷🇺Russian Серебристый геррес
🇪🇸Spanish Mojarra de Velo Plateado
🌍THA ปลาดอกหมากกระโดง
🌍VIE Cá Món Gai Dài
🇨🇳Chinese 曳絲鑽嘴魚 · 碗米仔 · 長棘銀鱸 · 長棘銀鱸 (曳絲鑽嘴魚)

Scientific Synonyms

Scientific Name Author Year Status
Gerres philippinus Günther 1862 Synonym
Gerres punctatus Cuvier 1830 Synonym
Pertica filamentosa Cuvier 1829 Synonym
Sparus edentulus Günther 1859 Heterotypic

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 62 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Whipfin silverbiddy ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.