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💧 Freshwater Critically Endangered 🌡️ Tropical

Discus ray

Paratrygon aiereba Walbaum, 1792
Max Length
-
Max Weight
14.0 kg
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Tropical
Resilience
Very low
Vulnerability
42.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Common in shallow areas and near banks . Reproductive biology in upper Orinoco basin provided by Lasso et al. (1997a), where females appear to bear only two young per gestation. Larger individuals may attain 25 kg in weight. Food includes insects, crustaceans and fishes .

Scientific Name
Paratrygon aiereba
Authority
Walbaum, 1792
Habitat
Freshwater
Climate
Tropical
IUCN Status
CR
Max Weight
14 kg
Trophic Level
3.4
Resilience
Very low
Vulnerability
42.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Discus ray is currently being compiled.

🌀 Behaviour

Behavioural data for Discus ray is currently being reviewed.

🦐 Diet

Diet information for Discus ray is currently being compiled.

🥚 Reproduction

Reproduction data for Discus ray is currently being compiled.

🌍 Habitat & Distribution

Freshwater; demersal. Tropical South America: Amazon River basin (Ucayali, Solimões, Amazon, Negro, Branco, Madeira and its affluents in Bolivia, and Tocantins River) and Orinoco basin.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.4±0.54

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.04 (TL)
Max Weight
14,000g

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
42.00/100
Moderate vulnerability
Trophic Level
3.4
Predator
Climate Zone
Tropical
Described By
Walbaum, 1792

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Disceus thayeri Garman 1913 Synonym
Paratrygon ajereba Walbaum 1792 Synonym
Raja ajereba Walbaum 1792 Synonym
Trygon aiereba Müller & Henle 1841 Synonym
Trygon strogylopterus Jardine 1843 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 10 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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