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

💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Orinoco sailfin catfish

Pterygoplichthys multiradiatus Hancock, 1828
Max Length
50 cm
Max Weight
-
Lifespan
-
Trophic Level
2.2
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
58.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Facultative air-breathing ; Occurs in streams and lakes and in weedy, mud-bottomed canals . Benthic . Nocturnal, feeds on algae , but will also feed on worms, insect larvae, and other bottom-dwelling aquatic animals . Spawning period peaks once a year . Reproductive behavior includes digging of burrows for egg laying . May exhibit male parental care .

Scientific Name
Pterygoplichthys multiradiatus
Authority
Hancock, 1828
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
50 cm
Trophic Level
2.2
Resilience
Medium
Vulnerability
58.00/100
Water Temp
23–27 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Siluriformes
Siluriformes
Family
Loricariidae
Loricariidae
Genus
Pterygoplichthys
Pterygoplichthys
Species
Orinoco sailfin catfish
Pterygoplichthys multiradiatus

🐟 Physical Description

: elongated.

🌀 Behaviour

Behavioural data for Orinoco sailfin catfish is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

Size at Maturity
32.5cm TL

Parental care may be exhibited by males .

🌍 Habitat & Distribution

Freshwater; demersal; pH range: 6.5 - 7.8; dH range: 4 - 20. Tropical; 23°C - 27°C ; 10°N - 1°N, 68°W - 61°W South America: Orinoco River basin.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
2.2±0.12
🌙 Nocturnal
Food Items

algae (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.02291 × L2.9 (TL)
Max TL
50cm

🌡️ Water Parameters & Tolerance

Temperature Range
23–27°C
pH Range
6.5–7.8
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
58.00/100
High vulnerability
Trophic Level
2.2
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Tropical
Described By
Hancock, 1828

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Ancistrus multiradiatus Hancock 1828 Synonym
Hypostomus multiradiatus Hancock 1828 Synonym
Liposarcus multiradiatus Hancock 1828 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 5 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 Orinoco sailfin 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.