At a glance the quick version
Looks how to spot one
Scaled livebearer
A small, fairly slim livebearer, more streamlined than the common platy and with a slightly longer dorsal fin. Males are smaller than females and carry a pointed gonopodium, while females have a fan-shaped anal fin.32
Personality what they are like
A calm, sociable fish that gets along with other peaceful species. Males can be persistent in following females, so a group with more females than males keeps things relaxed.3
Daily activity how busy a day looks
Active swimmer through the mid-water; appreciates open swimming room alongside plants.3
Grooming and care the hands-on bits
Easy to keep. Regular partial water changes and a varied diet keep it in good shape; expect a steady stream of fry if both sexes are kept together.3
Home where they are happiest
Aquarium from about 60 x 30 cm base (around 54 litres). Water about 20-26 °C in aquaria (wild range given as 15-25 °C), pH 7.0-8.2, hard water (roughly 9-30 dGH). In the wild it lives in warm springs, weedy canals and ditches.312
Food basics what goes in the bowl
Omnivore. Takes flakes, frozen and live foods; wild fish eat small worms, crustaceans, insects and plant matter, so include some vegetable food.132
Company who they like around
Best kept in a group with more females than males, in a peaceful community of similar-sized fish.3
The story where it all began
Seth Meek described the species in 1904 from north-eastern Mexico, placing it in Platypoecilus. It became a common aquarium fish and has also been used in genetic research. Breeders have since produced dozens of colour forms, some involving crosses with the swordtail and common platy.213
Fun facts for the dinner table
- 1
It is a separate species from the common platy (Xiphophorus maculatus), with a slimmer build and a longer dorsal fin.3
- 2
Females can give birth to up to about 100 young after a gestation of around 24 days.1
- 3
It has been used as a study animal in genetic research.2
- 4
Wild fish are tolerant of cooler water than many tropical aquarium fish.1
Recognised by the official bits
- IUCN Red List
- Least Concern (assessed 2018)1
- Taxonomy
- Family Poeciliidae; described by Meek in 1904 as Platypoecilus variatus2
The care rhythm a typical week and year
A typical home-care rhythm for a Variable Platy. A starting point, not a vet's advice.
- FeedingSmall amounts once or twice a dayevery day
- Temperature checkevery day
- Water changeAbout 25% of the waterevery week
- Water testevery week
- Glass cleanevery week
- Filter rinseRinse in old tank water, never tap waterevery month
Owner questions the things everyone asks
How often should I feed my Variable Platy?
Furry Diary's starting plan is to feed small amounts once or twice a day. As an omnivore, it enjoys flakes, frozen and live foods, so vary the diet. Always follow the food label and check with your vet for exact portions.312 Pet Wiki plan
What does a Variable Platy eat, and what should it never eat?
It eats flakes, frozen and live foods, plus some vegetable matter. Avoid giving anything not meant for fish, such as human food or unknown treats. For a safe diet, ask your vet or a good breeder.312
How much space does a Variable Platy need?
An aquarium with a base of about 60 x 30 cm (around 54 litres) is recommended. This gives active swimmers open room alongside plants. More space is always better for a small group.312
What temperature, light or water does a Variable Platy need?
Keep water at 20, 26°C, pH 7.0, 8.2, and hard (9, 30 dGH). Normal aquarium lighting is fine. Check temperature daily as per Furry Diary's plan, and test water weekly.312 Pet Wiki plan
How often should I clean a Variable Platy's home?
Furry Diary's plan suggests a weekly 25% water change, glass cleaning, and a monthly filter rinse (using old tank water, never tap water). Regular partial changes keep your fish healthy. Pet Wiki plan
Can a Variable Platy live with others?
Yes, it is calm and sociable, best kept in a group with more females than males. It gets along with other peaceful, similar-sized fish in a community tank.3
How long does a Variable Platy live?
Lifespan varies depending on care and environment. For a reliable estimate, ask your vet or a good breeder who knows the specific lineage.
Can I handle a Variable Platy?
This is a fish, so handling is not recommended. Instead, enjoy watching it swim and interact. Use a net only when necessary, and keep handling to a minimum to avoid stress.
Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Pet Wiki's own starting care plan. A friendly guide, not a vet's advice.
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Every fact on this page has a numbered source. Spotted an error? support@petwiki.app.
- FishBase: Xiphophorus variatus fishbase.seused for origin, size, water parameters, diet, IUCN, facts
- Wikipedia: Variable platyfish en.wikipedia.orgused for names, colour, history
- Seriously Fish: Xiphophorus variatus seriouslyfish.comused for tank size, water, behaviour, varieties
Checked 2026-09-30. Text is written in our own words from these sources.