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

Diadromous Least Concern ⚠️ Venomous ⚡ Traumatogenic 🌡️ Tropical

Blue salmon catfish

Neoarius graeffei Kner & Steindachner, 1867
Max Length
60 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
51.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Adults inhabit freshwater rivers and lagoons, as well as brackish estuaries and coastal marine waters. Can tolerate temperatures from 11°C to 38°C. Large groups of juveniles are often encountered . Feed on arthropods, insects, aquatic plants, mollusks, prawns, crayfish, fishes and bottom detritus. Nest is constructed among gravel where eggs are deposited forming a mound . The only species among oral incubating ariids exhibiting no parental care . Breeding takes place from September to February . Marine populations of A. graeffei appear to undertake extensive anadromous migrations associated with breeding, but no such movements were observed in the fluviatile population studied .

Scientific Name
Neoarius graeffei
Authority
Kner & Steindachner, 1867
Habitat
Diadromous
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
60 cm
Trophic Level
3.6
Resilience
Medium
Vulnerability
51.00/100
Migration
Anadromous
Water Temp
24–32 °C
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Siluriformes
Siluriformes
Family
Ariidae
Ariidae
Genus
Neoarius
Neoarius
Species
Blue salmon catfish
Neoarius graeffei

🐟 Physical Description

Dorsal spines (total): 1; Dorsal soft rays (total): 7; Anal spines: 0; Anal soft rays: 15 - 19. : fusiform / normal.

🌀 Behaviour

Behavioural data for Blue salmon catfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Spawn Location
Gravel

Nest is constructed among gravel where eggs are deposited forming a mound . The only species among oral incubating Ariidae exhibiting no parental care .

🌍 Habitat & Distribution

Marine; freshwater; brackish; demersal; pH range: 7.5 - 8.2; dH range: 18 - 30; anadromous . Tropical; 24°C - 32°C ; 3°S - 19°S

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish ⬇️ Benthic
Migration
Anadromous
Trophic Level
3.6±0.2
Food Items

arthropods, insects, aquatic plants, mollusks, prawns, crayfish, fishes and bottom detritus

📐 Morphometrics

Length–Weight Relationship: W = 0.00794 × L3.08 (TL)
Max TL
60cm
Dorsal Spines
1
Dorsal Rays
7
Anal Rays
17

🌡️ Water Parameters & Tolerance

Temperature Range
24–32°C
pH Range
7.5–8.2
Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
51.00/100
Moderate-High vulnerability
Trophic Level
3.6
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Kner & Steindachner, 1867

⚠️ 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

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Blue Catfish · Blue Salmon Catfish · Fork-tail Catfish · Forktail Catfish · Lesser Salmon Catfish · Salmon Catfish · Smaller Salmon Catfish
🌍CES křížovec Graeffeův
🇵🇹Portuguese Bagre-marinho-cauda-de-garfo

Scientific Synonyms

Scientific Name Author Year Status
Ariopsis graeffei Kner & Steindachner 1867 Synonym
Arius australis Günther 1867 Synonym
Arius curtisii Castelnau 1878 Synonym
Arius graeffei Kner & Steindachner 1867 Synonym
Hexanematichthys australis Günther 1867 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 18 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 Blue salmon 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.