Catalog / fish / Southern platyfish
fish · Poeciliidae
Southern platyfish
Xiphophorus maculatus
Wild range: Central America (North America)

At a glance: Southern platyfish care
Compiled reference information. Review the care notes and original sources below.
What temperature is listed for Southern platyfish?
The compiled profile lists 18.0–25.0 °C for Southern platyfish (Xiphophorus maculatus). Check the original sources below for context and differing recommendations.
What tank size is listed for Southern platyfish?
The profile lists a minimum tank volume of 13.2 US gallons (50.0 liters). Volume alone does not establish suitability; consider dimensions, group size and other inhabitants alongside the full care notes.
What pH is listed for Southern platyfish?
The compiled profile lists a pH of 7.0–8.0. Review the cited care sources alongside the other water parameters in this profile.
Natural habitat
The Southern Platyfish, native to slow-moving waters such as canals, ditches, and warm springs, exhibits slight sexual dimorphism with the male possessing a pointed caudal fin. They thrive in a community aquarium environment due to their peaceful temperament and adaptability to varying water conditions.
Where they are found
The natural range of Xiphophorus maculatus spans North and Central America, specifically from Ciudad Veracruz in Mexico to northern Belize. The species has been reported to have adverse ecological impacts when introduced to non-native habitats.
Aquarium care
In an aquarium, Southern Platyfish are easy to keep, prefer a pH of 7.0–8.0, and tolerate a hardness of 9.0–19.0 dGH. They require good water quality and, if provided with hiding spots, young fry can survive against predation from adults and other fish.
Feeding
Southern platyfish are omnivores, feeding on a diet that includes worms, crustaceans, insects, and plant matter. Providing a varied diet will support their health and coloration in the aquarium.
Compatibility
These fish are known for their peaceful temperament and can be kept in community tanks with other non-aggressive species. They appreciate being in groups; thus, it is recommended to keep them in small schools of at least four individuals.
Breeding
Southern Platyfish reach maturity in about three to four months, and females can give birth to 20-40 fry at a time. Care should be taken with fry to provide cover, as they can fall victim to predation by adults.
Sources
Compiled from multiple independent care sheets — not copied from a single site.