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

💧 Freshwater Least Concern ⚠️ Venomous ⚡ Traumatogenic 🌡️ Tropical

Northern rivers catfish

Brustiarius utarus Kailola, 1990
Max Length
55 cm
Max Weight
1.7 kg
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
49.00/100
Typical Length
30 cm
Depth Zone
-

📖 Overview

Prefers main river channels, but also occurs in lakes and on the floodplain. Feeds mainly on large crustaceans (Macrobrachium and Caridina), fishes, aquatic and terrestrial insects, nymphs and detritus. Occurs at temperatures ranging from 26 to 32°C. Mainly diurnal.

Scientific Name
Brustiarius utarus
Authority
Kailola, 1990
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
55 cm
Max Weight
1.7 kg
Trophic Level
3
Resilience
Medium
Vulnerability
49.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 1; Dorsal soft rays (total): 7; Anal spines: 0; Anal soft rays: 18 - 22. : elongated.

🌀 Behaviour

Behavioural data for Northern rivers catfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

👄 Mouth Brooder

Mouthbrooders. Ovary or brood mass contains 15 to 75 ripe eggs .

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical; 1°S - 6°S

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3±0.47
Food Items

large crustaceans (Macrobrachium and Caridina), fishes, aquatic and terrestrial insects, nymphs and

📐 Morphometrics

Length–Weight Relationship: W = 0.00468 × L3.13 (TL)
Max TL
55cm
Max Weight
1,700g
Dorsal Spines
1
Dorsal Rays
7
Anal Rays
20

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
49.00/100
Moderate-High vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Kailola, 1990

⚠️ Venom Profile

Medical Warning: This species is venomous. Seek immediate medical attention if envenomated. Contact emergency services and follow first aid guidance below.
Venom Type
proteinaceous
Delivery
dorsal and pectoral spines with venom glands
Potency
Mild
Mortality Risk
Low
Symptom Onset
2min
Duration
12.0hrs
Antivenom
✗ Not Available
Named Toxins
crinotoxins protein toxins
Symptoms
  • pain
  • oedema
  • rare systemic effects
Affected Body Systems
peripheral nervous system
First Aid
Hot water immersion.
Medical Treatment

Wound care, analgesia.

References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Northern rivers catfish ↗
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.