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

💧 Freshwater Least Concern 🌡️ Tropical

Banded banjo

Platystacus cotylephorus Bloch, 1794
Max Length
31.8 cm
Max Weight
Lifespan
Trophic Level
3.2
Depth
Climate
Tropical
Resilience
Vulnerability
29.00/100
Typical Length
15 cm
Depth Zone
demersal

📖 Overview

Occurs mainly in brackish water. Found on soft bottoms of shallow turbid water near river mouths. Reported to migrate from estuary into freshwater, but actual spawning apparently takes place in brackish water . The species has a peculiar mode of egg incubation wherein the female banjo catfish carries the eggs firmly attached to the underside of the body. This seems to be an adaptation to facilitate the oxygenation of the eggs in muddy environments. Reproduction probably occurs during the earlier part of the year .

Scientific Name
Platystacus cotylephorus
Authority
Bloch, 1794
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
31.8 cm
Trophic Level
3.2
Vulnerability
29.00/100
Water Temp
22–25 °C

🔬 Taxonomy

🐟 Physical Description

Physical description for Banded banjo is currently being compiled.

🌀 Behaviour

Behavioural data for Banded banjo is currently being reviewed.

🦐 Diet

Diet information for Banded banjo is currently being compiled.

🥚 Reproduction

Females carry their eggs and young attached to the ventral surface of the body.

🌍 Habitat & Distribution

Freshwater; brackish; demersal; pH range: 6.8 - 8.2; dH range: 12 - 35. Tropical; 22°C - 25°C Central and South America: Venezuela to northern Brazil (including the lower portions of coastal rivers).

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish ⬇️ Benthic
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00269 × L3.01 (TL)
Max TL
31.8cm

🌡️ Water Parameters & Tolerance

Temperature Range
22–25°C
pH Range
6.8–8.2

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Tropical
Described By
Bloch, 1794

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Aspredo cotylephorus Bloch 1794 Synonym
Aspredo sexcirrhis Valenciennes 1840 Synonym
Aspredo spectrum Gronow 1854 Synonym
Cotylephorus blochii Swainson 1838 Synonym
Platystacus nematophorus Bleeker 1862 Synonym
Silurus hexadactylus Lacepède 1803 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 30 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 Banded banjo ↗
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.