Home · Poeciliidae · Mexican swordtail
Mexican swordtail (Xiphophorus montezumae) — Poeciliidae

Mexican swordtail

Xiphophorus montezumae
Family: Poeciliidae
DD · Data Deficient

The Mexican swordtail (Xiphophorus montezumae) is a freshwater fish of the family Poeciliidae that grows up to 6 cm.

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

Description

The Montezuma swordtail is a livebearing toothcarp (family Poeciliidae) of north-eastern Mexico. The species reaches about 5 cm (excluding the male's sword tail) and has a slender, yellow-brown body, often with a zigzag line on the flank. The male carries a greatly elongated, sword-shaped lower caudal ray displayed during courtship. It lives in clear springs and mountain rivers of the Pánuco drainage. Its diet consists of algae, detritus, insect larvae and small zooplankton. Owing to its limited range its conservation status is assessed as Data Deficient (DD). The species is harmless to humans.

Frequently asked questions

How do you recognise the Mexican swordtail?

The Mexican swordtail has an elongate, eel-like body, is mainly yellow-gold and shows a plain pattern.

Where does the Mexican swordtail live?

The Mexican swordtail lives in fresh water and is mostly found around mixed bottom.

How big does the Mexican swordtail get?

The Mexican swordtail grows to a maximum of about 6 cm.

Is the Mexican swordtail dangerous to humans?

No, the Mexican swordtail is harmless to humans.

Is the Mexican swordtail edible?

The Mexican swordtail is not usually eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Montezuma-zwaarddrager sourced
English name
Mexican swordtail verified
Scientific name
Xiphophorus montezumae
Family
Poeciliidae
Other names
Montezuma swordtail verified

Appearance

Size class
Small verified
Max length (cm)
5.5 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Yellow / gold 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
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 Xiphophorus

More from the family Poeciliidae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →