Fin's Fish Guide
The Northern knodus (Knodus septentrionalis) is a freshwater fish of the family Characidae that grows up to 5 cm.
Description
The Northern knodus is a small characin (Characidae) from clear streams and rivers of the Amazon basin in South America. The species grows to about 5 cm and has a slender, laterally compressed, silvery body with an adipose fin and often a dark tail spot. As a social schooling fish it swims in the middle and upper layer and snaps at small zooplankton, insect larvae and algae. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Northern knodus?
The Northern knodus has a torpedo-shaped body and is mainly silver-grey.
Where does the Northern knodus live?
The Northern knodus lives in fresh water and is mostly found around open water. South America: Ecuador
How big does the Northern knodus get?
The Northern knodus grows to a maximum of about 5 cm.
Is the Northern knodus dangerous to humans?
No, the Northern knodus is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Knodus
More from the family Characidae
Want the complete picture on the Northern knodus?
Point your camera at the fish and Fin names the species in seconds. Free, and the Northern knodus is one of 12,519 species in the app.