Platy: gear and buying guides
The platy is a peaceful, colorful livebearer, perfect for a first community aquarium. It lives in a small group with more females than males, in at least 80 L between 20 and 26 °C, and prefers moderately hard to hard water. As prolific as the guppy, it requires planning for fry management.
Profile : 4 to 6 cm as an adult, 80 L minimum for a group, water between 20 and 26 °C.
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Species profile
- Lifespan
- 3 to 4 years
- Adult size
- 6 cm
- Minimum tank
- 80 L
- Water temperature
- 20 to 26 °C
- pH
- 7 to 8
- Temperament
- Hardy, calm and always busy in midwater, it is one of the easiest community fish to house together.
- Health watch
- white spot disease in cold water · digestive issues from too much protein
🩺 The health watchpoints on this page are for information only: only a veterinarian can examine your animal and make a diagnosis.
Platy gear, family by family
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Food
An omnivore with plant-leaning tastes: spirulina-based flakes, blanched vegetables and frozen foods as a supplement. It happily grazes soft algae off the decor.
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Care & grooming
Hardy in hard, slightly alkaline water, it declines in soft acidic water. A 20 to 25 percent weekly water change and stable parameters are enough to keep it healthy.
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Toys & enrichment
Bushy plants such as elodea or hornwort provide fry hiding spots and grazing areas. Alternate planted clumps with open swimming space.
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Bedding & habitat
A tank of at least 80 L, planted, with a trio of one male to two or three females to spread out harassment. Plan a solution for the monthly batches of fry.
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Travel & safety
Standard bag transport, a fairly sturdy species but sensitive to prolonged cold. Acclimate for 30 minutes, equalizing temperature then water parameters.
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Accessories
A standard internal or external filter, a 100 W heater, water conditioner and a fine net. Around 90 to 160 euros of equipment for an 80 to 120 L tank.
🍖 Feeding a Platy: omnivore diet, frequency, mistakes
Feeding a Platy: diet and habits
The Platy is an omnivore: a quality staple (flakes or granules) varied with frozen foods and greens. Since it eats in midwater, pick slow-sinking food and stop at what gets eaten in two minutes: beyond that you are feeding the water, not the fish.
Frequency and variety
Feed little and often — one or two small servings a day — and grant a weekly fast without guilt: excess, never shortage, is what ruins tanks. In a group of 5 or more, check everyone reaches the food: dominants serve themselves first. Alternate dry, frozen and rinsed thawed prey across the week.
The costly mistakes
A fish does not “beg” from hunger but from conditioning: hold firm — the ration is whatever is truly eaten in two minutes. Avoid discount flakes that fall apart on contact with water: a serious brand costs only a few euros more per year. The rest of the profile is on the full Platy profile.
Quick answers
- How often should a Platy be fed?
- One or two small daily feeds eaten within two minutes, plus one fasting day a week. In doubt, underfeed: the water will thank you.
- What food suits a Platy?
- An omnivore: a quality staple (flakes or granules) varied with frozen foods and greens — served in a form matched to its swimming zone.
In our shop, for this use: Programmable automatic aquarium fish feeder (€32.90) · the whole shop
We don’t ship products to your country yet; our practical guide downloads anywhere: Beginner axolotl: aquarium and care (€19)
🧴 Water care for a Platy: 20 to 26°C, pH 7 to 8
The Platy’s water: its real parameters
Temperature of 20 to 26°C, pH of 7 to 8, undetectable nitrites and nitrates under 25 mg/L: that is the contract. A drop-test kit (NO2, NO3, GH, KH, pH) beats any strip — and the nitrogen cycle, three to four weeks before any fish, is non-negotiable.
Water changes and tank upkeep
10 to 20% of the volume weekly, with water pre-heated to tank temperature: thermal shock stresses more than imperfect water, gentle substrate siphoning as you go and filter media rinsed in tank water, never under the tap: chlorine sterilises your filter.
Health: what stalks the Platy
The Platy watch-sheet: white spot disease in cold water and digestive issues from too much protein. Before any treatment, the reflex is a water test — pouring medicine into loaded water is treating the fever by breaking the thermometer. Well kept, a Platy lives 3 to 4 years.
Quick answers
- What water parameters for a Platy?
- 20 to 26°C, pH 7 to 8, zero nitrites and nitrates under 25 mg/L — checked with drop tests, not by eye.
- How often should a Platy tank get water changes?
- 10 to 20% weekly, water brought to temperature, filter rinsed only in tank water. Consistency beats volume.
An accessory from our shop for this use: Hang-on isolation and breeding box for aquariums (€28.90) · the whole shop
Outside our shipping area? The downloadable practical guide: Beginner axolotl: aquarium and care (€19)
🎾 Enriching a Platy tank: hardscape, shoal and occupation
Hardscape designed for its swimming zone
With a Platy, everything happens in midwater — furnish accordingly: tall plants at the back, wood as refuge and genuine swimming lanes organise its volume. An aquarium’s enrichment is its hiding places and its currents — not fluorescent ornaments.
Group life: the first enrichment
Read the Platy’s behaviour in its numbers: at 5+ you get displays, hierarchies and group swimming; below, a dull, stressed fish that hides — group size is the species’ first “toy”, before any decor purchase.
Food as occupation
Vary the serving style: frozen prey released into the current, food scattered at several points of the tank, feeding spots moved day to day. Hunting occupies — the fishkeeping equivalent of a snuffle mat.
Quick answers
- How many Platy should be kept together?
- 5 minimum, more if the tank allows: it is a group species, and numbers shape its behaviour and colours alike.
- How do you enrich a Platy tank?
- Through layout above all: decor designed for its living zone (in midwater), meals served in varied ways and a complete group — gadgets add nothing.
See it in the Planète Pets shop: Tall artificial aquarium plant, 45 to 49 cm, weighted base (€23.90) · the whole shop
We don’t ship products to your country yet; our practical guide downloads anywhere: Beginner axolotl: aquarium and care (€19)
🏠 The Platy tank: 80 L, hardware and start-up
80 litres minimum: why that number
For a group of 5+ Platy reaching 6 cm as an adult, plan 80 real litres — and remember a big tank is more STABLE, hence easier, than a small one: parameters drift slowly, leaving time to correct. This volume suits a sturdy standard cabinet — just verify perfect levelness.
Hardware: filter, heater, lighting
A filter turning the volume over three to five times an hour, a heater around 1 W per litre set to 20 to 26°C, backed by an independent thermometer — built-in thermostats sometimes lie, and lighting on a timer at 8 to 10 hours a day: any longer and the algae win.
Substrate, plants and start-up
Nutrient substrate under fine sand or quartz, robust plants (anubias, vallisneria, Java moss) and wood to structure the territory. Then patience: a complete nitrogen cycle (3 to 4 weeks, nitrites back to zero) before the first Platy — the step every hurried beginner pays for dearly.
Quick answers
- What tank size for Platys?
- A real 80 litres minimum for a group of 5+ — below that, parameters drift too fast to catch.
- Does a Platy need a heater?
- Yes, about 1 W per litre set to 20 to 26°C, with an independent thermometer double-checking the thermostat.
See it in the Planète Pets shop: Hollow moss-effect resin log for aquariums (€20.90) · the whole shop
Our products don’t ship to you yet, but the PDF practical guide is instant: Beginner axolotl: aquarium and care (€19)
Guides to read
- Community aquarium or species-only tank: which is right for a first setup?Bedding & habitat
Community aquarium or species-only tank: pros, cohabitation risks and advice for choosing how to set up your first aquarium.
- Best easy aquarium plants without CO2 for beginnersToys & enrichment
Which aquarium plants can you choose without CO2 injection? A selection of hardy, easy plants for a beginner's planted tank.
- Budget for a first brackish water aquarium: the real cost to get startedBedding & habitat
How much does a first brackish water aquarium cost? Tank, filtration, salt and salinity monitoring, budgeted item by item.
- Changing filter media too often: the mistake that wrecks your aquarium's cycleCare & grooming
Why you should never replace all your filter media at once: nitrifying bacteria, replacement frequency and the right habits.
- Restarting a neglected aquarium: a step-by-step guideCare & grooming
How do you restart an aquarium that's been left neglected without endangering the fish? Steps, water changes and mistakes to avoid.
- GH, KH and pH: understanding and adjusting aquarium water hardnessCare & grooming
GH, KH, pH: what do these three readings actually measure, and how do you adjust aquarium water hardness without stressing the fish?
- Upgrading to a bigger aquarium: moving your fish without the stressBedding & habitat
How do you upgrade to a bigger aquarium without breaking the biological cycle or stressing your fish? Steps and mistakes to avoid.
- Aquarium electrical safety: GFCI protection and good habitsTravel & safety
Heater, filter, lighting near the water: what electrical precautions keep an aquarium safe for fish and people?