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

💧 Freshwater 🌡️ Tropical

Irvineia Orientalis

Irvineia orientalis Trewavas, 1964
Max Length
50.2 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Tropical
Resilience
Low
Vulnerability
55.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Irvineia Orientalis (Irvineia orientalis), first described by Trewavas, 1964 is a large fish. Adults typically reach 50.20 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator.

Scientific Name
Irvineia orientalis
Authority
Trewavas, 1964
Habitat
Freshwater
Climate
Tropical
Max Length
50.2 cm
Trophic Level
3.5
Resilience
Low
Vulnerability
55.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Irvineia
Irvineia
Species
Irvineia Orientalis
Irvineia orientalis

🐟 Physical Description

Dorsal spines (total): 1; Dorsal soft rays (total): 6. Diagnosis: adipose fin always present; posterior nostrils always closer to each other than anterior ones; 7-9 branched pelvic fin rays; nasal barbel at least reaching to midway between eye and opercle; posterior side (inner side) of pectoral spine feebly serrated; swim-bladder with posterior caecum which extends caudally on one side of body (dextrally or sinistrally) to posterior end of anal fin .

🌀 Behaviour

Behavioural data for Irvineia Orientalis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Distinct pairing .

🌍 Habitat & Distribution

Freshwater; demersal. Tropical; 10°N - 0°N

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.5±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.06 (TL)
Max TL
50.2cm
Dorsal Spines
1
Dorsal Rays
6

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
55.00/100
Moderate-High vulnerability
Trophic Level
3.5
Predator
Climate Zone
Tropical
Described By
Trewavas, 1964

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Irvineia Orientalis ↗
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Spotted incorrect or outdated data?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.