Fauna
Fish · GBIF taxon 2344483

Featherfin Squeaker

Synodontis eupterus

Also known as Featherfin Synodontis

Featherfin squeakers cruise muddy riverbeds under cover of darkness, grazing on algae, detritus, and insect larvae with fleshy, sensitive barbels. When agitated or disputing territory, they stridulate their pectoral spine joints against the shoulder girdle to produce audible squeaks and croaks. As juveniles mature, their dorsal fin rays extend into dramatic, feather-like filaments that wave gracefully in gentle currents.

FreshwaterNocturnalBottom Dweller
Featherfin Squeaker reference
Licensed reference(c) Gourami Watcher, some rights reserved (CC BY-SA) · cc-by-sa
—observations
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & prey
  • Chironomid Midge Larvae
  • Freshwater Snails
  • Filamentous Algae
Predators
  • Nile Perch
  • Nile Crocodile
  • African Fish Eagle
ThreatsHabitat alteration, dam construction, agricultural runoff
HabitatsSlow-moving rivers, muddy riverbeds, floodplains, rocky pools
Life span15–25 years
Classification
  1. OrderSiluriformes
  2. FamilyMochokidae
  3. GenusSynodontis
  4. SpeciesSynodontis eupterus
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
Sharp pectoral and dorsal spines lock rigidly and can puncture skin; avoid bare-handed handling.
Why it is dangerous
Locking serrated pectoral and dorsal spines can puncture hands deeply, creating painful wounds prone to secondary infection.
How to recognize a risky encounter
Look for an elongated dorsal fin with high filamentous rays and a mottled brown-and-grey body covered in dark spots.
What to do
Never pick up bare-handed or trap against surfaces; guide into a solid container to lift safely out of water.
Responsible observation
  • Handling Precaution: Use solid plastic containers instead of mesh nets, which easily catch and tear the locking spines.
  • Substrate Selection: Keep on rounded gravel or soft sand to prevent damage to delicate sensory barbels.
  • Night Observation: View under dim red light after sunset to catch peak foraging and social behavior.
Related species
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