Xiphophorus maculatus: living card for the platy

Xiphophorus maculatus (platy) is hardy and visible, which can mislead new keepers. A fertile group can double the aquarium load fast.

Quick read

• Type: Central American livebearer.
• Aquarium: peaceful community tank with plants and moderately hard water.
• Indicative temperature: 22-26 C.
• pH: 7.0-8.2.
• Hardness: moderate to hard.
• Base volume: 70 L for a stable group.
• Feeding: omnivorous, with regular vegetable matter.
• Difficulty: low-medium; breeding changes the bioload.

What to check before buying

Look for active fish that are not overly thin and have no deformed bellies. Mix sexes only if constant breeding is acceptable.

Before buying, confirm that the aquarium is cycled, the group size or pair plan makes sense, and the setup runs at the species’ real temperature.

Aquarium design

Dense plants provide refuge, but do not replace a population plan. Mature filtration and regular changes keep an easy fish from becoming unstable.

Use the card as a baseline, then watch the fish. Loss of colour, constant hiding, or all-day competition calls for a design correction before a chemical fix.

Working parameters

It prefers mineralized water with good alkalinity. In very soft water, condition may decline unless remineralization is planned.

Treat these ranges as a working zone, not permission to swing parameters. Rapid changes, immature aquariums, and incompatible species cause most problems.

Compatibility and warning

Suitable with peaceful fish from similar water. Avoid fin nippers or predators that turn every birth into constant pursuit.

Apathy, rapid breathing, or females chased without pause indicate too many males, poor water quality, or lack of refuge.

Reference sources

FishBase for taxonomy and distribution; NOAA/University of Florida historical ornamental-trade data for frequent market species; Aquarium Co-Op and specialist aquarium guides for practical husbandry ranges.