Fin's Fish Guide
The Alfaro (Alfaro cultratus) is a freshwater fish of the family Poeciliidae that grows up to 8 cm.
Description
The knife livebearer is a livebearing toothcarp (Poeciliidae) from Central America. The species is slender and translucent and stands out for a sharp, saw-like keel of scales along the underside of the tail base. It inhabits clear streams and rivers with a slow to moderate current. At and near the surface it snaps at insects, small zooplankton and plant matter. The females bear live young. The species is harmless to humans.
Frequently asked questions
How do you recognise the Alfaro?
The Alfaro has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Sharp, serrated ventral keel along the caudal peduncle; surface live-bearer.
Where does the Alfaro live?
The Alfaro lives in fresh water and is mostly found around open water. Central America; clear streams and rivers.
How big does the Alfaro get?
The Alfaro grows to a maximum of about 8 cm.
Is the Alfaro dangerous to humans?
No, the Alfaro is harmless to humans. None required: this species is harmless to humans.
Is the Alfaro edible?
The Alfaro is not usually eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Alfaro
More from the family Poeciliidae
Want the complete picture on the Alfaro?
Point your camera at the fish and Fin names the species in seconds. Free, and the Alfaro is one of 12,519 species in the app.