Sunset Platy (Variatus Platy)

Xiphophorus variatus

Livebearers
Reviewed by Guidarium Editorial DeskUpdated May 11, 2026

The Variatus Platy, highly popular in its 'Sunset' color morph, is an active, hardy livebearer. Unlike its cousin the Southern Platy (X. maculatus), the Variatus prefers slightly cooler temperatures and is highly adaptable. They are prolific breeders. Males relentlessly pursue females, so keeping a ratio of 1 male to 2-3 females is strictly recommended to prevent female exhaustion.

Sunset Platy (Variatus Platy) At a Glance

Adult Size6 cm
Body ShapeCompressed
Growth RateFast
TemperamentPeaceful
Water TypeFreshwater Only
Flow PreferenceModerate
Waste OutputHigh
StockingGroup of 3+

Sunset Platy (Variatus Platy) Tank Requirements

Minimum Volume55 L
Minimum Length60 cm
FlowModerate
Water TypeFreshwater Only
Must-Haves in the Tank
Plants - Densely coveredEstablished Algae (Otocinclus)
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Will Sunset Platy (Variatus Platy) fit in your tank?

Care guides tell you what Sunset Platy (Variatus Platy) needs, the next question is whether your tank can safely provide it. Test Sunset Platy (Variatus Platy) against your tank size, maintenance needs, and the fish you already keep before you buy.

Sunset Platy (Variatus Platy)
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Sunset Platy (Variatus Platy) Water Parameters

Temperature1525°C
pH78.2
Hardness1025 dGH

Sunset Platy (Variatus Platy) Temperament & Compatibility

Aggression LevelPeaceful
2/10
Where They Swim
Surface
Mid-level
Bottom
Stocking Guidelines
Keep at Least3 fish
Max per TankNo limit
Can Live Alone?No — needs a group
Behavior Traits
Hyperactive / Fast SwimmerFry Predator

Sunset Platy (Variatus Platy) Varieties

Each variety inherits the species defaults above. Only differences are highlighted.

Male

Males are slightly smaller, more vibrantly colored, and possess a pointed, modified anal fin called a gonopodium used for mating. They are highly active and will constantly harass females. Must not outnumber females in a mixed tank.

Differs in 2 traits from base species

Also known as: Male Platy

Adult Size5 cm
TemperamentMostly Peaceful

Female

Females are larger, more robust, and have a standard fan-shaped anal fin. They can store sperm for months and will drop fry every 3-4 weeks. Dense planting is required to give them hiding places from males.

Differs in 2 traits from base species

Also known as: Female Platy

Adult Size7 cm
TemperamentPeaceful

Hi-Fin Morph

A popular selective breeding mutation featuring an elongated, sail-like dorsal fin. They require slightly gentler flow and snag-free decor to protect their fins.

Differs in 2 traits from base species

Also known as: High Fin Platy, Sailfin Platy, Hifin Variatus

FlowLow
Behavior Traits
Long Finned (Nipper Target)Hyperactive / Fast SwimmerFry Predator

Sunset Platy (Variatus Platy) Care Guide Summary

The Sunset Platy (Variatus Platy), scientifically known as Xiphophorus variatus, belongs to the Livebearers family group. Adults reach a maximum size of approximately 6 cm and have a compressed body shape with a fast growth rate. Classified as peaceful, this species primarily occupies the surface and mid-level zones of the aquarium and produces a high level of biological waste.

To thrive, the Sunset Platy (Variatus Platy) requires a freshwater only aquarium with a minimum volume of 55 litres and a tank length of at least 60 cm. Water temperature should be maintained between 15°C and 25°C, with a pH range of 78.2 and a general hardness of 1025 dGH. A moderate water flow is preferred.

The Sunset Platy (Variatus Platy) is a rewarding species to keep, provided its core environmental needs are met. This species is available in 3 varieties: Male, Female, and Hi-Fin Morph. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.

Sunset Platy (Variatus Platy) Habitat Setup

When setting up an aquarium for the Sunset Platy (Variatus Platy), a moderate water flow best suits their natural preferences. Because this species occupies the surface and mid-level zones, the aquarium layout should prioritise adequate surface area with floating cover to make them feel secure near the waterline and open swimming space in the centre of the tank for free movement. Useful additions include an established tank with natural algae growth, as they depend on it as a primary food source and dense planting to provide cover, break sightlines, and reduce stress.

Sunset Platy (Variatus Platy) Compatibility Notes

Classified as peaceful, the Sunset Platy (Variatus Platy) is a social species that requires the company of its own kind to thrive. When choosing tankmates, their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the surface and mid-level zones can help reduce competition and territorial overlap.

Who Sunset Platy (Variatus Platy) Is Actually For

Sunset Platy (Variatus Platy) is best for a fishkeeper who wants a species that can settle into a calmer community setup and can provide a keeper who can commit to a proper group of at least 3. It makes the most sense for a hobbyist who will actually build around its needs, especially plants.

The most common mistake is buying Sunset Platy (Variatus Platy) for looks first and only later discovering how its adult size, behavior, or bioload changes the whole tank plan. Another frequent problem is underestimating its social needs. A token pair or trio often behaves very differently from a real group.

Sunset Platy (Variatus Platy) Recommended Tank Sizes

Standard aquarium sizes that meet the minimum volume and length requirements for Sunset Platy (Variatus Platy).

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Frequently Asked Questions About Sunset Platy (Variatus Platy)

How big does Sunset Platy (Variatus Platy) get?

Sunset Platy (Variatus Platy) (Xiphophorus variatus) typically reaches a maximum adult size of approximately 6 cm. They have a compressed body shape and a fast growth rate.

What tank size does Sunset Platy (Variatus Platy) need?

A minimum aquarium volume of 55 litres and a tank length of at least 60 cm are recommended for Sunset Platy (Variatus Platy). This ensures enough swimming space and helps maintain stable water conditions.

What water parameters does Sunset Platy (Variatus Platy) need?

Sunset Platy (Variatus Platy) thrives in freshwater only conditions with a temperature range of 15–25°C, a pH between 7 and 8.2, and a general hardness of 10–25 dGH. A moderate water flow is preferred.

Is Sunset Platy (Variatus Platy) peaceful or aggressive?

Sunset Platy (Variatus Platy) is classified as peaceful with an aggression score of 2 out of 10. They are generally well-suited to peaceful community tanks.

Can Sunset Platy (Variatus Platy) live alone?

No, Sunset Platy (Variatus Platy) should be kept in groups of at least 3 to reduce stress and encourage natural behaviour.

Does Sunset Platy (Variatus Platy) have any special tank requirements?

Yes. Sunset Platy (Variatus Platy) benefits from plants - densely covered and established algae (otocinclus) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 11, 2026
Last updated
May 11, 2026
Issues or corrections?
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