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

💧 Freshwater Least Concern 🌡️ Tropical

Smooth back river stingray

Potamotrygon orbignyi Castelnau, 1855
Max Length
Max Weight
1.4 kg
Lifespan
Trophic Level
3.2
Depth
Climate
Tropical
Resilience
Very low
Vulnerability
52.00/100
Typical Length
Depth Zone

📖 Overview

Occurs in stream swamps, floodplain lakes and artificial lagoons. Feeds mainly on insects and benthic crustaceans .

Scientific Name
Potamotrygon orbignyi
Authority
Castelnau, 1855
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Weight
1.4 kg
Trophic Level
3.2
Resilience
Very low
Vulnerability
52.00/100
Water Temp
24–26 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Smooth back river stingray is currently being compiled.

🌀 Behaviour

Behavioural data for Smooth back river stingray is currently being reviewed.

🦐 Diet

Diet information for Smooth back river stingray is currently being compiled.

🥚 Reproduction

Reproduction data for Smooth back river stingray is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 6.8 - 7.5. Tropical; 24°C - 26°C South America: Widespread in Amazon and Orinoco River basins and in river systems in Suriname, Guyana and French Guiana.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.2±0.43
Food Items

insects and benthic crustaceans (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.04 (TL)
Max Weight
1,400g

🌡️ Water Parameters & Tolerance

Temperature Range
24–26°C
pH Range
6.8–7.5
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
52.00/100
Moderate-High vulnerability
Trophic Level
3.2
Predator
Climate Zone
Tropical
Described By
Castelnau, 1855

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Potamotrygon dorbignyi Castelnau 1855 Synonym
Potamotrygon dumerilii Castelnau 1855 Synonym
Potamotrygon reticulatus Günther 1880 Synonym
Trygon dorbignyi Castelnau 1855 Synonym
Trygon dumerilii Castelnau 1855 Synonym
Trygon orbignyi Castelnau 1855 Synonym
Trygon reticulatus Günther 1880 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 7 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 Smooth back river stingray ↗
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.