Fin's Fish Guide
The Onesided livebearer (Jenynsia multidentata) is a fish of the family Anablepidae that grows up to 6 cm.
Description
The onesided livebearer is a livebearing toothcarp (Anablepidae) from fresh and brackish water of the La Plata system and coastal waters of southern South America. The species grows to about 6 cm and has a slender, silvery body with fine markings. Remarkably the mating is one-sided: the male's organ and the female's opening each face left or right, so only matching animals can pair. The female bears live young. It eats small invertebrates and algae. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Onesided livebearer?
The Onesided livebearer is mainly silver-grey.
Where does the Onesided livebearer live?
The Onesided livebearer is mostly found around mixed bottom.
How big does the Onesided livebearer get?
The Onesided livebearer grows to a maximum of about 6 cm.
Is the Onesided livebearer dangerous to humans?
No, the Onesided livebearer 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.
More photos
Want the complete picture on the Onesided livebearer?
Point your camera at the fish and Fin names the species in seconds. Free, and the Onesided livebearer is one of 12,519 species in the app.
All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Jenynsia
More from the family Anablepidae
Want the complete picture on the Onesided livebearer?
Point your camera at the fish and Fin names the species in seconds. Free, and the Onesided livebearer is one of 12,519 species in the app.