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

💧 Freshwater Least Concern 🌡️ Tropical

Parailia Occidentalis

Parailia occidentalis Pellegrin, 1901
Max Length
7.5 cm
Max Weight
Lifespan
Trophic Level
3.3
Depth
Climate
Tropical
Resilience
High
Vulnerability
14.00/100
Typical Length
Depth Zone
demersal

📖 Overview

Confined to large and moderate rivers; sometimes penetrates into estuaries; gregarious schooling species, such schools probably an important prey for several larger carnivorous species . Oviparous, eggs are unguarded . Maximum TL reported 85 mm .

Scientific Name
Parailia occidentalis
Authority
Pellegrin, 1901
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
7.5 cm
Trophic Level
3.3
Resilience
High
Vulnerability
14.00/100

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Siluriformes
Siluriformes
Family
Schilbeidae
Schilbeidae
Genus
Parailia
Parailia
Species
Parailia Occidentalis
Parailia occidentalis

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 51 - 68. Diagnosis: adipose fin present; inner side of pectoral spine feebly serrated, with small to very small serrations; 51-68 soft anal fin rays; vomerine teeth usually absent; a dark triangular blotch at base of caudal fin . : elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Parailia Occidentalis is currently being reviewed.

🦐 Diet

Diet information for Parailia Occidentalis is currently being compiled.

🥚 Reproduction

Distinct pairing .

🌍 Habitat & Distribution

Freshwater; brackish; demersal. Tropical; 0°S - 15°S

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish ⬇️ Benthic
Trophic Level
3.3±0.4
🐠 Schooling

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.06 (TL)
Max TL
7.5cm
Anal Rays
60

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
14.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Pellegrin, 1901

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Ailia occidentalis Pellegrin 1901 Synonym
Physailia ansorgi Boulenger 1910 Synonym
Physailia occidentalis Pellegrin 1901 Synonym
Physailia pellucida Reizer, Mattei & De Vos 1980 Synonym
Physailia villiersi Boulenger 1912 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 35 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 Parailia Occidentalis ↗
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.