Fauna
Fish

Amazon Sailfin Catfish

Pterygoplichthys pardalis

Also known as Leopard Pleco, Amazon Sailfin Pleco

Amazon sailfin catfish graze on algae and riverbed biofilm using a downturned, suckermouth disc adapted to anchor against swift currents. Heavy plates of bony armor shield their bodies from predators, complemented by rigid, erectile spines along the prominent dorsal and pectoral fins. Males dig long burrows into muddy riverbanks to guard incubating egg clutches, a nesting behavior that frequently destabilizes shorelines where introduced populations flourish.

ArmoredFreshwaterBottom-dweller
Amazon Sailfin Catfish reference
(c) Juan Carlos Caicedo Hernández, some rights reserved (CC BY), uploaded by Juan Carlos Caicedo Hernández · cc-by
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyBenthic algae, Organic detritus, Aquatic insect larvae
Predators
  • Giant river otter
  • Black caiman
  • Great blue heron
ThreatsPollution and siltation in native rivers, alongside eradication efforts where invasive
HabitatsSlow-moving rivers, swamps, sluggish streams, and flooded forests
Life span10–15 years
Classification
  1. OrderSiluriformes
  2. FamilyLoricariidae
  3. GenusPterygoplichthys
  4. SpeciesPterygoplichthys pardalis
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Viewing: Scan muddy shallows and submerged logs during early morning or dusk when feeding actively.
  • Handling: Avoid gripping barehanded as dorsal and pectoral fin spines lock rigidly and can puncture skin.
  • Biosecurity: Never release aquarium specimens into wild waterways to prevent severe ecological disruption.
Related species
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