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💧 Freshwater Least Concern ⚠️ Venomous ⚡ Traumatogenic 🌡️ Tropical

Sharp-nosed catfish

Potamosilurus macrorhynchus Weber, 1913
Max Length
50 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
47.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Feeds mainly on higher plants, including a variety of fruits, but also takes ants, grasshoppers, beetles, small crabs and prawns.

Scientific Name
Potamosilurus macrorhynchus
Authority
Weber, 1913
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
50 cm
Trophic Level
3
Resilience
Medium
Vulnerability
47.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Siluriformes
Siluriformes
Family
Ariidae
Ariidae
Genus
Potamosilurus
Potamosilurus
Species
Sharp-nosed catfish
Potamosilurus macrorhynchus

🐟 Physical Description

Dorsal spines (total): 1; Dorsal soft rays (total): 7; Anal spines: 0; Anal soft rays: 20 - 22.

🌀 Behaviour

Behavioural data for Sharp-nosed catfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 👄 Mouth Brooder
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical; 6°S - 10°S

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3±0.39
Food Items

higher plants, including a variety of fruits, but also takes ants, grasshoppers, beetles, small crab

📐 Morphometrics

Length–Weight Relationship: W = 0.00468 × L3.13 (TL)
Max TL
50cm
Dorsal Spines
1
Dorsal Rays
7
Anal Rays
21

🌡️ 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
47.00/100
Moderate-High vulnerability
Trophic Level
3
Predator
Climate Zone
Tropical
Described By
Weber, 1913

⚠️ 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 Sharp-nosed Catfish
🌍CES křížovec velkorypý

Scientific Synonyms

Scientific Name Author Year Status
Arius macrorhynchus Weber 1913 Synonym
Hemipimelodus aaldareni Hardenberg 1936 Synonym
Hemipimelodus aaldereni Hardenberg 1936 Synonym
Hemipimelodus macrorhynchus Weber 1913 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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