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Monterrey Platyfish (Xiphophorus couchianus) — Poeciliidae

Monterrey Platyfish

Xiphophorus couchianus
Family: Poeciliidae
CR · Critically Endangered

The Monterrey Platyfish (Xiphophorus couchianus) is a freshwater fish of the family Poeciliidae that grows up to 4 cm.

Length
4 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Mixed bottom
Danger
Harmless
Range
Northeastern Mexico (endemic)
Edibility
Not eaten

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Description

The Monterrey platyfish is a small livebearing fish endemic to fresh water around Monterrey in northeastern Mexico. The species reaches only about 4 cm and has a stocky, olive-grey body without a bright colour pattern. Like other platies the female gives birth to live young and the male carries an anal fin modified into a mating organ. Owing to the drying and destruction of its springs the species has all but vanished in the wild. The IUCN assesses it as Critically Endangered (CR).

Frequently asked questions

How do you recognise the Monterrey Platyfish?

The Monterrey Platyfish has an elongate, eel-like body, is mainly brown and shows a plain pattern. Inconspicuous olive-grey body; critically endangered ovoviviparous spring fish

Where does the Monterrey Platyfish live?

The Monterrey Platyfish lives in fresh water and is mostly found around mixed bottom. Northeastern Mexico (endemic)

How big does the Monterrey Platyfish get?

The Monterrey Platyfish grows to a maximum of about 4 cm.

Is the Monterrey Platyfish dangerous to humans?

No, the Monterrey Platyfish 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.

Is the Monterrey Platyfish edible?

The Monterrey Platyfish is not usually eaten.

More photos

Monterrey Platyfish (Xiphophorus couchianus) — Poeciliidae — 2
iNaturalist ((c) saraalien1, some rights reserved (CC BY-NC))
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All data

Identification

English name
Monterrey Platyfish verified
Scientific name
Xiphophorus couchianus
Family
Poeciliidae
Other names
Monterrey platyfish; Platy Monterrey verified

Appearance

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

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
Northeastern Mexico (endemic) verified
Origin
Native verified

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Algae, small invertebrates and midge larvae inferred
Social behaviour
Small groups sourced
Territorial
No sourced
Activity
Diurnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes sourced
Seasonality
Critically endangered ovoviviparous spring fish; present year-round. sourced
Special features
Inconspicuous olive-grey body; critically endangered ovoviviparous spring fish sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
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. verified

Status & sources

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

Same genus Xiphophorus

More from the family Poeciliidae

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