Sunset Platy (Variatus Platy)
Xiphophorus variatus
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
Sunset Platy (Variatus Platy) Tank Requirements
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) Water Parameters
Sunset Platy (Variatus Platy) Temperament & Compatibility
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
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
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
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 7–8.2 and a general hardness of 10–25 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).
15 Gallon Standard
20 Gallon High
20 Gallon Long
29 Gallon Standard
30 Gallon Breeder
36 Gallon Bowfront
Show 20 more tank sizes
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.
Useful setup supplies
We may earn from qualifying purchases
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?
- Contact the editorial team
Top Tank Mates for Sunset Platy (Variatus Platy)
These fish are strong compatibility matches for Sunset Platy (Variatus Platy) based on water preferences, temperament, adult size, and tank behavior.
Spotted Hillstream Loach
Gastromyzon punctulatus
Ideal Tank MatesTrapdoor Snail
Cipangopaludina chinensis
Ideal Tank MatesWhite Cheeked Goby
Rhinogobius duospilus
Ideal Tank MatesShovelnose Sturgeon
Scaphirhynchus platorynchus
Ideal Tank MatesTandanus Catfish
Tandanus tandanus
Ideal Tank MatesSkunk Cory
Corydoras arcuatus
Ideal Tank MatesPlants That Suit Sunset Platy (Variatus Platy)
These plants pair well with Sunset Platy (Variatus Platy) based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Afzel's Anubias
Anubias afzelii
Amazon Sword
Echinodorus amazonicus
Anacharis
Egeria densa
Anubias Barteri
Anubias barteri
Baby Tears
Lindernia rotundifolia
Balansae
Cryptocoryne crispatula
Fish Similar to Sunset Platy (Variatus Platy)
Endler's Livebearer
Poecilia wingei
A tiny, vibrant, and highly active livebearer closely related to the Guppy. Males display intense, neon colors and patterns, while females are larger and plainly colored. They are prolific breeders and require hard, alkaline water to thrive.
Platy
Xiphophorus maculatus
A quintessential community fish known for its durability and massive variety of colors. Native to Central America, Platies are livebearers, meaning they give birth to free-swimming fry. They are peaceful, active grazers that require hard, alkaline water to thrive. They are excellent for beginners but breed prolifically.
Dusky Millions Fish
Phalloceros caudimaculatus
A highly adaptable, sub-tropical livebearer native to South America. Known for its hardiness, it thrives in unheated aquariums and can tolerate mildly brackish water. Unlike many common livebearers, they are voracious algae grazers and may damage soft-leaved plants. Males relentlessly pursue females to mate, so keeping a ratio of at least 2-3 females per male is strongly advised.
Sunset Hap
Dimidiochromis strigatus
A striking, large, open-water predator native to Lake Malawi. As its name implies, mature males develop a spectacular 'sunset' coloration with a blue head fading into a deep orange-red belly. They are pursuit/ambush predators and will readily consume any fish small enough to fit in their mouths (including small Mbuna). Best kept in an all-male Hap/Peacock display or in a harem (1 male to multiple females).
Redtail Splitfin
Xenotoca eiseni
A robust and highly active livebearer endemic to Mexico (Goodeidae family). Unlike standard livebearers, females nourish their young via umbilical-like structures (trophotaenia) rather than yolks. They are infamous in the hobby as aggressive fin-nippers and should absolutely not be kept with slow-moving or long-finned fish (like Bettas, Angelfish, or Corydoras). They require hard, alkaline water and cooler temperatures.
Swordtail
Xiphophorus hellerii
A popular, highly active livebearer known for the male's elongated lower tail fin (the 'sword'). They are hardy but require larger tanks than other common livebearers (like Guppies or Platies) due to their size and immense swimming energy. They require hard, alkaline water and do best with a ratio of one male to multiple females to disperse harassment.



