Fin's Fish Guide
The Isthmian killi (Cynodonichthys isthmensis) is a freshwater fish of the family Rivulidae that grows up to 7 cm.
Description
The Isthmian killi is a small egg-laying killifish (Rivulidae) from shallow, slow-flowing fresh water of Central America. The species grows to about 5 cm and has a slender, elongate body; males are brown with rows of red and blue spots, females plainer. As a surface fish it lives among floating plants and leaf litter of streams and swamps and snaps at small invertebrates. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Isthmian killi?
The Isthmian killi has an elongate, eel-like body, is mainly brown and shows a spots pattern.
Where does the Isthmian killi live?
The Isthmian killi lives in fresh water and is mostly found around open water. North America: Costa Rica, Nicaragua
How big does the Isthmian killi get?
The Isthmian killi grows to a maximum of about 7 cm.
Is the Isthmian killi dangerous to humans?
No, the Isthmian killi 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 Cynodonichthys
More from the family Rivulidae
Want the complete picture on the Isthmian killi?
Point your camera at the fish and Fin names the species in seconds. Free, and the Isthmian killi is one of 12,519 species in the app.