Fin's Fish Guide
The Nion pearlfish (Austrolebias nioni) is a freshwater fish of the family Rivulidae that grows up to 6 cm.
Description
The Nion pearlfish is a killifish (Rivulidae) from shallow pools, streams and swamps of the seasonal pools of Uruguay. The species grows to about 6 cm and has a slender body; males are brightly coloured with spots, marbling and coloured fin margins. Many relatives are annual: their eggs survive a dry period in the soil. As a bottom-oriented fish it snaps at insects, larvae and small invertebrates. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Nion pearlfish?
The Nion pearlfish has an elongate, eel-like body, is mainly multicoloured and shows a spots pattern.
Where does the Nion pearlfish live?
The Nion pearlfish lives in fresh water and is mostly found around open water.
How big does the Nion pearlfish get?
The Nion pearlfish grows to a maximum of about 6 cm.
Is the Nion pearlfish dangerous to humans?
No, the Nion pearlfish 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 Austrolebias
More from the family Rivulidae
Want the complete picture on the Nion pearlfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Nion pearlfish is one of 12,519 species in the app.