Southern platyfish

Photo: Carlosar, CC BY-SA 3.0, via Wikimedia Commons

Poeciliidae

Southern platyfish

Xiphophorus maculatus

peacefulharem

5 cm

Adult size

60 L

Minimum volume

4

Minimum group

3 years

Lifespan

Water parameters

Understand these values
pH7 – 8
49
Hardness (GH)7 – 20°
0°30°
Temperature22 – 27°C
18°C32°C
Genus
Xiphophorus
Diet
omnivore
Social life
harem

In the wild

Overview

Described in 1866 by Albert Günther of the British Museum, the platy owes its name maculatus (“spotted”) to the dark spots of the wild form. Xiphophorus means “sword bearer” in Greek, for the pointed gonopodium of males, their anal fin transformed into a copulatory organ.

Together with its cousin the swordtail, it has been a model in cancer research since the 1920s: some hybrids between these two species develop melanomas, which made it possible to identify genes involved in the disease. The countless aquarium varieties (red, “mickey mouse”, wagtail…) often come from these crosses.

Scientific name
Xiphophorus maculatus (Günther, 1866)
Classification
Cyprinodontiformes › Poeciliidae
IUCN Red List
Data deficient (DD)

Natural habitat

Atlantic slope of Central America, from Veracruz (Mexico) to Guatemala, Belize and Honduras

Observations (GBIF) and localities Native countries Rivers and lakes

It is native to the Atlantic coastal plain of Mexico (from Veracruz), Guatemala, Belize and northern Honduras. It has been introduced to many countries, where it has sometimes harmed local species.

It lives in warm springs, canals, ditches, creeks and slow-flowing marshes, over silt and with vegetated banks, in hard, alkaline water.

Behaviour

Very peaceful, it suits most community aquariums; even males tolerate each other. They relentlessly chase the females: several females per male are recommended.

An omnivore, it feeds on worms, crustaceans, insects and plant matter, and readily grazes algae. A livebearer, it matures in 3 to 4 months and breeds without any intervention: broods are born continuously in a mixed tank.

Sources:FishBase Seriously Fish GBIF · Base map: Natural Earth

Southern platyfish · Aquarius