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Lerma livebearer (Poeciliopsis infans) — Poeciliidae

Lerma livebearer

Poeciliopsis infans
Family: Poeciliidae
LC · Least Concern

The Lerma livebearer (Poeciliopsis infans) is a freshwater fish of the family Poeciliidae that grows up to 4 cm.

Length
3.5 cm
Water
Freshwater
Depth
0.0–1.0 m
Diet
Omnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Mixed bottom
Danger
Harmless
Edibility
Not eaten

Description

The Lerma livebearer is a very small livebearing fish of the family Poeciliidae from the highlands of central Mexico, in the Lerma-Santiago drainage. The species reaches only about 3.5 cm and has a slender body; the male has a gonopodium. It inhabits standing and slow-flowing waters and prefers altitudes of around 1000 m. As an omnivore it feeds on algae, detritus and small zooplankton. Fertilisation is internal and the female bears live young. It is one of the smallest livebearers of the Mexican highlands.

Frequently asked questions

How do you recognise the Lerma livebearer?

The Lerma livebearer has an elongate, eel-like body, is mainly silver-grey and shows a plain pattern.

Where does the Lerma livebearer live?

The Lerma livebearer lives in fresh water and is mostly found around mixed bottom.

How big does the Lerma livebearer get?

The Lerma livebearer grows to a maximum of about 4 cm. On average the species is around 3 cm.

Is the Lerma livebearer dangerous to humans?

No, the Lerma livebearer is harmless to humans.

Is the Lerma livebearer edible?

The Lerma livebearer is not usually eaten.

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All data

Identification

Dutch name
Lerma-levendbarende sourced
English name
Lerma livebearer verified
Scientific name
Poeciliopsis infans
Family
Poeciliidae

Appearance

Size class
Small verified
Max length (cm)
3.5 verified
Average length (cm)
2.5 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Rounded inferred
Mouth position
Superior (upward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Min depth (m)
0.0 verified
Max depth (m)
1.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes inferred

For anglers

Edibility
Not eaten sourced
Fishing method
Geen doelsoort voor de hengelsport; hooguit incidentele vangst of bruikbaar als aasvisje. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Poeciliopsis

More from the family Poeciliidae

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