Photo: Monika Korzeniec (CC BY-SA 3.0) — via Wikimedia Commons
Platy (Xiphophorus maculatus)
A cheerful, bulletproof livebearer in every colour of the rainbow — arguably the easiest community fish there is.
Will it live with a Platy?
We compare each fish against your platy on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Agassiz's Corydoras✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Blackline Rasbora✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Blackline Rasbora in a shoal of 6+ or it gets stressed and nippy.
- Blood Red Tiger Pleco✅ CompatiblePeaceful · 6 cm · Medium care · 24–29 °C (75–84 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Bloodfin Tetra✅ CompatiblePeaceful · 5.5 cm · Easy care · 18–28 °C (64–82 °F)
- Compatible on the things that matter: shared water near 21–28 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Bloodfin Tetra in a shoal of 6+ or it gets stressed and nippy.
- Butterfly Hillstream Loach✅ CompatiblePeaceful · 6 cm · Hard care · 18–24 °C (64–75 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Celebes Rainbowfish✅ CompatiblePeaceful · 7 cm · Medium care · 22–28 °C (72–82 °F)
- Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Celebes Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Corydoras Catfish✅ CompatiblePeaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Corydoras Catfish in a shoal of 6+ or it gets stressed and nippy.
- Costa's Tetra✅ CompatiblePeaceful · 7 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Costa's Tetra in a shoal of 6+ or it gets stressed and nippy.
- Croaking Gourami✅ CompatiblePeaceful · 7 cm · Easy care · 24–28 °C (75–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Diamond Tetra✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Diamond Tetra in a shoal of 6+ or it gets stressed and nippy.
- Duplicareus Corydoras✅ CompatiblePeaceful · 5.5 cm · Medium care · 23–27 °C (73–81 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Duplicareus Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Elegant Cory✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Elegant Cory in a shoal of 6+ or it gets stressed and nippy.
- False Julii Corydoras✅ CompatiblePeaceful · 6 cm · Easy care · 22–26 °C (72–79 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep False Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Glass Bloodfin Tetra✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Glass Bloodfin Tetra in a shoal of 6+ or it gets stressed and nippy.
- Guppy✅ CompatiblePeaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Hillstream Loach✅ CompatiblePeaceful · 6 cm · Hard care · 20–24 °C (68–75 °F)
- Compatible on the things that matter: shared water near 21–24 °C, workable temperaments, and no predator-and-prey size gap.
- Narcissus II Cory✅ CompatiblePeaceful · 5.5 cm · Medium care · 22–26 °C (72–79 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Narcissus II Cory in a shoal of 6+ or it gets stressed and nippy.
- Neon Dwarf Rainbowfish✅ CompatiblePeaceful · 6 cm · Easy care · 23–27 °C (73–81 °F)
- Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Neon Dwarf Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Panda Loach✅ CompatiblePeaceful · 6 cm · Hard care · 18–23 °C (64–73 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Pearl Danio✅ CompatiblePeaceful · 6 cm · Easy care · 20–25 °C (68–77 °F)
- Both are peaceful, and their water overlaps around 21–25 °C — no size, zone or temperament conflicts.
- Keep Pearl Danio in a shoal of 6+ or it gets stressed and nippy.
- Rust Corydoras✅ CompatiblePeaceful · 5.5 cm · Easy care · 23–27 °C (73–81 °F)
- Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
- Keep Rust Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Slate Corydoras✅ CompatiblePeaceful · 6 cm · Medium care · 23–28 °C (73–82 °F)
- Compatible on the things that matter: shared water near 23–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Slate Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Spotfin Corydoras✅ CompatiblePeaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
- Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Keep Spotfin Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Sterbai Corydoras✅ CompatiblePeaceful · 6.5 cm · Medium care · 24–30 °C (75–86 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Sterbai Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Adolf's Cory⚠️ With cautionPeaceful · 5.5 cm · Medium care · 22–26 °C (72–79 °F)
- One likes softer water and the other harder (10–28 vs 1–8 dGH) — a compromise, not a perfect match.
- Keep Adolf's Cory in a shoal of 6+ or it gets stressed and nippy.
- Ash Lipped Apisto⚠️ With cautionSemi-aggressive · 7 cm · Hard care · 24–29 °C (75–84 °F)
- Water hardness preferences differ (Platy 10–28 vs Ash Lipped Apisto 1–8 dGH).
- Ash Lipped Apisto is semi-aggressive and may chase or nip the smaller Platy — plant heavily and break up sight lines.
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Betta⚠️ With cautionSemi-aggressive · 6.5 cm · Easy care · 24–28 °C (75–82 °F)
- Expect Betta to harass Platy at times; give dense cover and watch them at feeding.
- Black Ruby Barb⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 22–26 °C (72–79 °F)
- Black Ruby Barb and Platy are close in size, but the semi-aggressive one tends to dominate — add platy in a group to spread the pressure.
- Your 75 L tank is below the ~100 L this pairing really wants — crowding raises aggression.
- Keep Black Ruby Barb in a shoal of 6+ or it gets stressed and nippy.
- Black Skirt Tetra⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 20–26 °C (68–79 °F)
- Black Skirt Tetra and Platy are close in size, but the semi-aggressive one tends to dominate — add platy in a group to spread the pressure.
- Keep Black Skirt Tetra in a shoal of 6+ or it gets stressed and nippy.
- Colombian Tetra⚠️ With cautionSemi-aggressive · 6.5 cm · Easy care · 24–28 °C (75–82 °F)
- Expect Colombian Tetra to harass Platy at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~114 L this pairing really wants — crowding raises aggression.
- Keep Colombian Tetra in a shoal of 6+ or it gets stressed and nippy.
- Desert Goby⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 18–28 °C (64–82 °F)
- Desert Goby is semi-aggressive and may chase or nip the smaller Platy — plant heavily and break up sight lines.
- Dwarf Chain Loach⚠️ With cautionPeaceful · 6 cm · Medium care · 24–29 °C (75–84 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Dwarf Chain Loach in a shoal of 6+ or it gets stressed and nippy.
- Eastern Betta⚠️ With cautionSemi-aggressive · 6 cm · Medium care · 24–28 °C (75–82 °F)
- One likes softer water and the other harder (10–28 vs 1–8 dGH) — a compromise, not a perfect match.
- Expect Eastern Betta to harass Platy at times; give dense cover and watch them at feeding.
- German Blue Ram⚠️ With cautionPeaceful · 6 cm · Hard care · 27–30 °C (81–86 °F)
- Water hardness preferences differ (Platy 10–28 vs German Blue Ram 1–8 dGH).
- GloFish Tetra⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 21–28 °C (70–82 °F)
- GloFish Tetra and Platy are close in size, but the semi-aggressive one tends to dominate — add platy in a group to spread the pressure.
- Keep GloFish Tetra in a shoal of 6+ or it gets stressed and nippy.
- Odessa Barb⚠️ With cautionSemi-aggressive · 6 cm · Easy care · 20–26 °C (68–79 °F)
- Odessa Barb and Platy are close in size, but the semi-aggressive one tends to dominate — add platy in a group to spread the pressure.
- Keep Odessa Barb in a shoal of 6+ or it gets stressed and nippy.
- Peaceful Betta⚠️ With cautionSemi-aggressive · 6 cm · Medium care · 24–28 °C (75–82 °F)
- Peaceful Betta and Platy are close in size, but the semi-aggressive one tends to dominate — add platy in a group to spread the pressure.
- Samurai Gourami⚠️ With cautionPeaceful · 6 cm · Hard care · 24–28 °C (75–82 °F)
- pH preferences only just meet (Platy 7–8.2 vs Samurai Gourami 4–6.5) — target the overlap and acclimate slowly.
- One likes softer water and the other harder (10–28 vs 0–5 dGH) — a compromise, not a perfect match.
- Smaragd Betta⚠️ With cautionAggressive · 6 cm · Medium care · 23–28 °C (73–82 °F)
- Expect Smaragd Betta to harass Platy at times; give dense cover and watch them at feeding.
- Three-striped Dwarf Cichlid⚠️ With cautionSemi-aggressive · 6 cm · Medium care · 23–29 °C (73–84 °F)
- Water hardness preferences differ (Platy 10–28 vs Three-striped Dwarf Cichlid 1–8 dGH).
- Three-striped Dwarf Cichlid and Platy are close in size, but the semi-aggressive one tends to dominate — add platy in a group to spread the pressure.
- Alligator Gar⛔ Not recommendedAggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
- Platy is bite-sized to a 250 cm predatory alligator gar — it will be eaten.
- Alligator Gar is aggressive and may chase or nip the smaller Platy — plant heavily and break up sight lines.
- Your 75 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
- Clown Knifefish⛔ Not recommendedAggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
- Clown Knifefish (90 cm) is big enough to swallow the 6 cm Platy whole.
- Expect Clown Knifefish to harass Platy at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
- Fire Eel⛔ Not recommendedSemi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
- Platy is bite-sized to a 100 cm predatory fire eel — it will be eaten.
- Fire Eel clearly outsizes Platy and is semi-aggressive; risky unless the tank is big and well-planted.
- Your 75 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
- Koi⛔ Not recommendedPeaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
- Platy is bite-sized to a 90 cm koi — it will be eaten.
- Your 75 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
- Redtail Catfish⛔ Not recommendedAggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
- Platy is bite-sized to a 120 cm predatory redtail catfish — it will be eaten.
- Expect Redtail Catfish to harass Platy at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
- Spotted Gar⛔ Not recommendedAggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
- Platy is bite-sized to a 90 cm predatory spotted gar — it will be eaten.
- Spotted Gar clearly outsizes Platy and is aggressive; risky unless the tank is big and well-planted.
- Your 75 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
- Wels Catfish⛔ Not recommendedAggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
- Platy is bite-sized to a 300 cm predatory wels catfish — it will be eaten.
- Wels Catfish clearly outsizes Platy and is aggressive; risky unless the tank is big and well-planted.
- Your 75 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
- Wolf Cichlid⛔ Not recommendedAggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
- Platy is bite-sized to a 72 cm predatory wolf cichlid — it will be eaten.
- Wolf Cichlid is aggressive and may chase or nip the smaller Platy — plant heavily and break up sight lines.
- Your 75 L tank is below the ~760 L this pairing really wants — crowding raises aggression.
Compatibility is computed from each species' care data — a strong starting point, not a guarantee. Individual temperament varies, so always introduce new fish slowly and watch them.
Platy care specs
- Care level
- Easy
- Breeding
- Easy
- Max size
- 6 cm (2.4 in)
- Min tank size
- 57 L (15.1 gal)
- Temperature
- 21–28 °C (70–82 °F)
- pH
- 7–8.2
- Hardness
- 10–28 dGH
- Lifespan
- 3–4 years
- Diet
- Omnivore
- Swim level
- Middle
- Group size
- 3+ (shoaling)
- Family
- Poeciliidae
- Origin
- Central America — Mexico to Guatemala
What is a platy?
The platy (Xiphophorus maculatus), also sold as the southern platyfish or moonfish, is a small, hardy livebearer from the family Poeciliidae — the same family as guppies and mollies. It tops the shortlist of fish most recommended for beginners, and for good reason: it tolerates a wide temperature range, forgives minor water-quality lapses, eats almost anything, gets along with virtually every other peaceful community fish, and comes in a dazzling range of colour forms, from fiery sunset red to the three-dot “mickey-mouse” pattern.
Reaching just 6 cm (about 2.4 in) at full size, platies punch above their weight in personality. They spend most of their time exploring the middle column of the tank in small, loosely cohesive groups, and their constant, unhurried activity makes a planted community tank feel genuinely alive. If you want a fish that is rewarding to watch, easy to keep, and unlikely to cause trouble with its neighbours, the platy is hard to beat.
Where do platies come from?
Wild Xiphophorus maculatus are native to the Atlantic slope of Central America, from southern Mexico (Veracruz region) south through Belize, Guatemala and Honduras. They inhabit warm, shallow streams, ditches, ponds and coastal lagoons — water that tends to be hard and alkaline due to the limestone geology of the region, well-vegetated, and relatively slow-moving.
That origin dictates their preferred water chemistry precisely. Unlike many popular tropical fish whose native water is soft and acidic (tetras, discus, rams), platies come from hard, mineral-rich environments. This is why they thrive at a pH of 7.0–8.2 and hardness of 10–28 dGH, and why pairing them with strict soft-water species in the same tank can be a compromise neither fish loves.
All platies in the hobby are captive-bred, and decades of selective breeding have produced the enormous range of colour varieties available today. The natural wild form is comparatively drab — olive-grey with a hint of pattern — but the care requirements remain the same across all varieties.
What size tank does a platy need?
The minimum practical tank size is 57 litres (15 gallons). That is enough space for the minimum group of three and, importantly, enough water volume to keep parameters stable when the inevitable breeding begins. A 57 L tank is also large enough to add a few compatible tank-mates and some planting.
Bigger is better. A 75–110 L (20–30 gal) tank gives you room for a slightly larger group, denser planting to shelter fry, and more stable water chemistry — which benefits all the fish. Tank shape matters too: choose a tank that is longer and wider rather than tall, since platies swim in the middle column and appreciate horizontal swimming room. A tight-fitting lid is worth fitting; platies are not famous jumpers, but they will occasionally surprise you.
Use a gentle filter. Platies do not require strong circulation, and heavy flow can stress them. A sponge filter or a hang-on-back set to a low flow rate works well for most setups.
What water parameters do platies need?
- Temperature: 21–28 °C (70–82 °F). Platies tolerate one of the widest temperature ranges of any tropical fish, which is part of what makes them so beginner-friendly.
- pH: 7.0–8.2. They prefer slightly alkaline water — this is non-negotiable for long-term health.
- Hardness: 10–28 dGH. Moderately hard to hard water suits them best. If your tap water is soft, crushed coral or aragonite in the filter can raise both hardness and pH gently.
Stability matters as much as the numbers themselves. Cycle the tank fully before adding fish, perform weekly water changes of around 20–25 %, and avoid large swings in any parameter. A platy in a stable 23 °C (73 °F) tank will outlive one kept in a tank that bounces between 20 °C and 28 °C week to week.
What do platies eat?
Platies are omnivores with a healthy appetite for plant matter — more so than guppies. A good staple diet consists of high-quality flake or small pellets formulated for community fish. Supplement this with:
- Vegetable matter — blanched spirulina wafers, courgette, pea (shell removed), or spinach, offered a few times a week.
- Protein variety — frozen or live daphnia, bloodworm, and brine shrimp once or twice a week to round out nutrition and encourage good colour.
Feed small amounts once or twice a day, only what the fish consume in two to three minutes. Platies will eat enthusiastically and beg at the glass, but overfeeding is the single most common cause of poor water quality in community tanks. Skip one feeding day per week to allow their digestive systems to clear.
Are platies peaceful — and what fish can live with them?
Platies are thoroughly peaceful fish. They do not nip fins, do not establish rigid territories, and almost never trouble tank-mates of comparable size. The main intraspecies note is that males will chase females almost continuously to breed; keeping at least two females per male distributes this attention and prevents any single female from being harassed to exhaustion.
Good community tank-mates include other livebearers (mollies, swordtails), peaceful mid-level tetras, danios, corydoras catfish, dwarf gouramis, and most rasboras that share their preference for neutral-to-alkaline water. Avoid fin-nipping species (tiger barbs in small numbers, serpae tetras) and large, predatory fish that will simply eat them. Avoid strict soft-water species (neon tetras, discus) if you want everyone’s water chemistry to be optimal.
For a full compatibility breakdown, see Platy tank mates.
How do you tell male and female platies apart?
Sexing platies is one of the easier tasks in fishkeeping. Look at the anal fin — the small fin on the underside near the tail:
- Males have a modified anal fin called a gonopodium: it is narrow, elongated, and pointed, used to deliver sperm internally during mating. Males are also noticeably smaller and slimmer overall.
- Females have a fan-shaped, triangular anal fin like most fish. They are larger and carry a distinctly rounder, fuller belly, especially when gravid (pregnant). The gravid spot — a darkened area near the rear of the abdomen — becomes very visible as birth approaches.
Juveniles can be sexed reliably at around 6–8 weeks of age as the gonopodium develops. If you want to control breeding, separate males and females before that point.
How do platies breed?
Platies are livebearers: the female retains fertilised eggs internally and gives birth to free-swimming fry, skipping the egg and larval stages entirely. Breeding happens readily in any mixed-sex community tank with no special intervention required — this is simultaneously their most endearing and most challenging trait for the unprepared keeper.
A female platy can store sperm from a single mating and produce multiple broods over several months without another encounter with a male. Gestation lasts roughly 24–30 days, and a single female may drop anywhere from 20 to 80 fry per batch depending on her size and condition.
The fry are born fully formed and immediately mobile. They are also immediately edible — adults and other tank-mates will eat them given the chance. Dense planting (java moss, hornwort and floating plants like water sprite are ideal) gives fry the cover they need to survive. A separate 20 L breeding or grow-out tank is the most reliable method if you want to raise a significant number. Fry accept finely crushed flake or purpose-made fry food from day one and grow quickly.
What are common platy diseases?
Platies are robust, but no fish is immune to disease when water quality slips or new fish bring pathogens into the tank. The most common issues are:
- Ich (white spot) — tiny white grains on the body and fins, caused by the parasite Ichthyophthirius multifiliis. Almost always triggered by a sudden temperature drop or the introduction of an infected fish. Quarantine all new arrivals for two to four weeks before adding them to your display tank.
- Fin rot — fraying or darkening fin edges caused by bacterial infection, typically secondary to poor water quality. The fix starts with a water change and addressing the root chemistry problem.
- Velvet (Oodinium) — a golden-dust shimmer on the body, often alongside clamped fins and scratching behaviour. Difficult to detect in early stages; a torch shone at a low angle helps.
- Wasting / internal parasites — a fish that eats well but steadily loses weight may harbour internal parasites. This is more common in wild-caught stock, but captive fish are not immune.
- Dropsy — pinecone-like scale raising combined with a swollen abdomen. A serious systemic condition; isolate the affected fish immediately.
Prevention covers the majority of risk: cycle the tank, maintain consistent water parameters, quarantine new arrivals, avoid overstocking, and do not overfeed.
Health note: symptoms of many fish diseases overlap. Confirm what you are dealing with using a reputable veterinary or fish-health resource before reaching for any treatment — misdiagnosis and unnecessary medication cause more harm than good.
How long do platies live?
A healthy, well-kept platy lives 3–4 years. This is a reasonable lifespan for a small livebearer, and you can realistically reach the upper end by keeping water quality high, feeding a varied diet, and avoiding chronic stress from overcrowding or incompatible tank-mates.
Because platies breed so readily, many keepers end up with a self-renewing population rather than tracking individual fish lifespans — but the individual fish you start with should comfortably see you through several years of enjoyment. Buy from a reputable source with healthy, active stock, quarantine new arrivals, and the platy will reward you with some of the most hassle-free fishkeeping you will ever do.
Frequently asked questions
Do platies and guppies need the same water?
Yes — both are livebearers that prefer slightly hard, alkaline water (pH 7.0–8.2). That also means they're less ideal with soft-water fish like neon tetras, which prefer the opposite.
Will platies breed in a community tank?
Readily. Like guppies they're livebearers and a mixed group produces fry regularly. Keep more females than males to reduce harassment, and provide plants for fry to hide in.
What you need to keep a platy
The baseline is a heated, filtered 57 L+ tank: a reliable heater to hold 21–28 °C (70–82 °F), a gentle filter that won't batter a platy in the current, and a tight-fitting lid. Cycle the tank fully before adding any fish.
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