Fin's Fish Guide
The San Jeronimo livebearer (Poeciliopsis fasciata) is a brackish-water fish of the family Poeciliidae that grows up to 5 cm.
Description
The San Jeronimo livebearer is a small livebearing fish of the family Poeciliidae from southern Mexico. The species reaches only about 5 cm and has a streamlined, olive to silvery-grey body with fine dark cross-bars. It prefers fast-flowing waters. Like other livebearers fertilisation is internal and the female gives birth to fully developed young; the male has an anal fin modified into a copulatory organ (gonopodium). The diet consists of algae, detritus and small invertebrates. Because of its small size the species has no fishery value.
Frequently asked questions
How do you recognise the San Jeronimo livebearer?
The San Jeronimo livebearer has a torpedo-shaped body, is mainly silver-grey and shows a vertical stripes pattern. Ovoviviparous with internal fertilisation; prefers fast-flowing water.
Where does the San Jeronimo livebearer live?
The San Jeronimo livebearer lives in brackish water and is mostly found around mixed bottom. Southern Mexico, in fast-flowing waters.
How big does the San Jeronimo livebearer get?
The San Jeronimo livebearer grows to a maximum of about 5 cm.
Is the San Jeronimo livebearer dangerous to humans?
No, the San Jeronimo livebearer is harmless to humans. None required: this species is harmless to humans.
Is the San Jeronimo livebearer edible?
The San Jeronimo livebearer is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Poeciliopsis
More from the family Poeciliidae
Want the complete picture on the San Jeronimo livebearer?
Point your camera at the fish and Fin names the species in seconds. Free, and the San Jeronimo livebearer is one of 12,519 species in the app.