Xiphophorus maculatus red tiger

Choose a peaceful platy for moderately hard water

The red tiger platy (Xiphophorus maculatus) is a small freshwater livebearer in the Poeciliidae family. The species occurs naturally from Ciudad Veracruz in Mexico to northern Belize, where adults inhabit warm springs, canals, ditches, creeks and swamps. FishBase records a maximum length of 4 cm total length. It suits a beginner who can provide a mature, filtered aquarium with stable, moderately hard water and enough room for a small social group.

Keep it at 20–25°C, pH 7.0–8.0 and 10–12 dGH. These routine values are the overlap of FishBase’s recorded environment, the Seriously Fish aquarium profile and OATA’s platy group guidance. Keep the water moderately hard or harder, never soft and acidic.

Plan on an aquarium base of at least 60 × 30 cm and a volume of around 54 litres. OATA suggests keeping at least three platies together, with two females to each male. A larger aquarium is appropriate when more fish or other community animals are included because the filter, swimming area and shelter must serve the whole stocking plan.

Choose the dispatch size separately from adult planning

One purchase supplies one red tiger platy. Use the live size selector to choose 2–3 cm, 3–4 cm or 4–5 cm. These labels describe the measured dispatch grade rather than a different species, care requirement or guaranteed life stage. The size you select is the size supplied, not the adult size.

Use the selected grade to judge the fish’s size on arrival, but build the aquarium around its social needs, water conditions and adult planning figure. A smaller dispatch fish does not make a smaller aquarium suitable, while a larger grade does not remove the need for careful acclimatisation or gradual stocking. Compare the fish with existing residents before ordering so that every animal can feed without being crowded or chased.

Sex is guaranteed only when the selected option explicitly states male or female. This Xiphophorus maculatus red tiger listing has no sex-guaranteed option. Do not use colour, dispatch size or the gallery image to plan a male-to-female ratio. If the eventual sex mix matters to the stocking plan, assess the group after the fish have settled and allow enough capacity for the consequences of a mixed-sex livebearer group.

The gallery images are representative of this type of animal rather than photographs of the exact animal supplied, so colours can look slightly different from the live animal. Use the photographs to understand the general red tiger form and aquarium presentation, while allowing for natural variation between individual fish.

You can also browse the current platy fish collection when comparing colour forms. Treat each product as a separate offer and check its own size, sex and sold-unit wording before making a choice.

Plan the aquarium around the recorded adult size

Use 4 cm as the recorded adult-size figure for this fish. FishBase gives that maximum as total length. Seriously Fish records a larger 5 cm standard length, which excludes the tail, and OATA says platies generally stay within 6–8 cm. Build the space plan below around the adult fish, not the size supplied.

Separate body length from space needs

A small body does not remove the need for swimming room, companionship, filtration and shelter. Seriously Fish bases its aquarium recommendation on a 60 × 30 cm footprint with a volume of around 54 litres. That base provides more useful horizontal room than choosing an aquarium by volume alone, so check both dimensions and litres before introducing the fish.

OATA recommends at least 45 litres for a small platy group, but the species profile’s larger 60 × 30 cm base and around 54-litre volume make the more suitable minimum plan here. Increase the aquarium size when keeping more groups or adding community companions. A larger water volume also changes more slowly when room temperature, feeding or fish waste varies.

Build a mature, filtered aquarium before introduction

Prepare a mature aquarium with a functioning biological filter before the fish arrives. The RSPCA explains that fish release toxic ammonia, which filter bacteria convert first to toxic nitrite and then to safer nitrate. A newly installed filter has not yet developed that bacterial population, so filling a tank and switching on equipment is not the same as maturing it.

Use the first tropical aquarium guide to prepare the system before livestock is introduced. Test the water rather than judging readiness from clarity. Ammonia and nitrite must both read zero mg per litre before adding fish, and the temperature, pH and hardness should already be stable within the planned range.

Match the equipment to the aquarium

For the Seriously Fish example of an aquarium around 54 litres, a turnover of four to five times the aquarium volume per hour corresponds to a filter rated at roughly 215–270 litres per hour. Its heater example is about 50 W when the room is around 20°C. Treat those equipment figures as a worked example for that aquarium size: actual equipment must be selected for the aquarium volume and room conditions.

• Filter: keep it running continuously and check that its flow is not blocked.
• Heater: use a thermostatic model where room conditions will not hold 20–25°C.
• Substrate: aquarium gravel or sand is suitable.
• Cover: add live plants where possible, or use fish-safe artificial plants and ornaments.
• Swimming room: leave open space rather than filling the entire footprint with decoration.

A planted aquarium is especially appropriate because this species appreciates that type of layout. Arrange plants and shelter so every fish can move away from persistent attention while still reaching food and open water.

Use a simple space check

• Base: provide at least 60 × 30 cm.
• Volume: plan on around 54 litres or more.
• Group: OATA suggests at least three platies.
• Layout: combine planted or artificial cover with unobstructed swimming room.
• Stocking: calculate space for every adult fish and for the fry a mixed-sex group will keep producing.

Recheck the final plan whenever another fish is added. The important limit is the aquarium’s total biological and behavioural load, not the length of one red tiger platy in isolation.

Hold the water inside the shared routine range

Keep the aquarium at 20–25°C, pH 7.0–8.0 and 10–12 dGH. This is the overlap of FishBase’s recorded environmental range, Seriously Fish’s species-level aquarium values and OATA’s broader platy figures.

Measure the source water before trying to alter it. Use the water chemistry guide to understand what each test means, then use the water matcher to compare the aquarium readings with this routine range. A pH reading on its own is not enough: moderately hard water is part of the species’ care requirement.

Respond to readings in the right order

• Ammonia or nitrite above zero: pause further stocking, test again and address the biological-filter problem.
• Temperature outside 20–25°C: adjust the heater gradually and confirm the result with a thermometer.
• pH below 7.0: check the source water and hardness before making changes.
• Hardness below 10 dGH: treat the aquarium as unsuitable until a stable moderately hard plan is established.
• Rising nitrate: review feeding, stocking, maintenance and the source-water baseline.

Avoid chasing a single reading with repeated abrupt adjustments. Stable values inside the range are more useful than frequent swings caused by correcting too aggressively.

Feed a varied omnivorous diet in small portions

Use a good-quality flake or granule with a high algae content as the routine prepared food. FishBase records worms, crustaceans, insects and plant matter in the wild diet, while Seriously Fish says the species accepts dried, frozen and live foods. OATA recommends small live or frozen foods such as daphnia, small bloodworm or tubifex to add variety.

Feed once a day and offer only what the fish can finish within a few minutes. Stop adding food when the fish lose interest and remove obvious leftovers before they break down.

Build variety without overfeeding

Match particle size to the fish’s mouth, especially for a 2–3 cm dispatch fish. Break flakes or choose a suitably small granule so food can be swallowed without repeated failed attempts. Distribute a small portion across the feeding area when several fish are present, then watch that each animal reaches food.

Uneaten food adds waste that the biological filter must process. If food remains after the feeding period, reduce the next portion rather than relying on extra maintenance to compensate. If one fish repeatedly misses food while others feed normally, assess whether flow, competition or its condition is preventing access.

Do not judge the correct ration by begging behaviour alone. Use the few-minute limit, body condition and weekly water tests together. That approach provides the recorded variety while protecting the zero-ammonia and zero-nitrite targets.

Use a weekly routine that protects filter bacteria

Carry out a 25% partial water change at least once every week. Use a siphon to remove solid waste from the gravel while leaving enough of the aquarium undisturbed for the fish to retain cover.

Test ammonia and nitrite at least once per week and record the readings. Also track nitrate against the normal level in the tap water, because OATA’s ceiling is no more than 20 mg per litre above that baseline. Add extra tests after a stocking change, an unexpected feeding increase or any change in fish behaviour.

Complete the water change in a consistent order

1. Measure the aquarium temperature and test the water before removing any.
2. Siphon approximately 25% of the volume, collecting some removed aquarium water in a clean container if the filter needs attention.
3. Treat replacement tap water with conditioner to remove chlorine or chloramine before adding it.
4. Add the replacement water carefully and restore the aquarium to its normal level.
5. Confirm that the heater and filter are operating normally.

Check the filter for blockage, but clean it only when flow or accumulated debris makes cleaning necessary. Do not rinse filter media under the tap. Rinse it lightly in aquarium water removed during the partial water change, which reduces the loss of the beneficial bacterial population living in the media.

Tap water can carry chlorine or chloramine, which may kill the beneficial bacteria living in the media. The biological filter depends on established bacteria, and unnecessary disruption can reduce the aquarium’s ability to process ammonia and nitrite. If the weekly tests show either compound above zero, treat the result as an immediate water-quality problem rather than waiting for the next scheduled maintenance day.

Increase stocking slowly enough for the filter to respond

Add fish gradually rather than filling the planned community in one step. Every added fish increases waste and feeding, so the beneficial bacterial population must grow to process the new load. OATA warns that stocking too quickly can cause new tank syndrome, in which ammonia or nitrite rises because the filter bacteria cannot yet cope.

Check readiness before each addition

• Confirm ammonia and nitrite are both zero mg per litre.
• Confirm temperature remains within 20–25°C.
• Confirm pH remains within 7.0–8.0 and hardness within 10–12 dGH.
• Check that existing fish are feeding and behaving normally.
• Check that the filter flow is unobstructed and the aquarium still has open swimming room.
• Allow for the adult stocking plan, not only the fish’s dispatch sizes.

After an addition, test more frequently and watch feeding, breathing and swimming. A normal result before introduction is only the starting point; the filter must continue to hold ammonia and nitrite at zero as the new biological load develops.

Pause further additions if either toxic compound appears, if nitrate rises unusually quickly or if established fish begin hiding, breathing differently or missing meals. Resume the stocking plan only after readings and behaviour have stabilised.

A larger aquarium generally offers greater environmental stability, but volume does not replace gradual stocking. The filter still needs time to adjust to extra waste. For a social starting group, OATA suggests at least three platies; community companions should be considered only after that group, the aquarium base and the filter capacity have been planned together.

Follow the arrival sequence before release

Receive the parcel in person and start filming before it is opened. Follow the delivery and Live Arrival Guarantee policy: make one continuous unboxing video beginning with the parcel still sealed and the outer box visible. Keep filming as the parcel is opened and show the fish inside the sealed bag before anything is disturbed.

1. Receive the sealed parcel: live fish must not be left unattended, and filming starts before opening.
2. Open it in one continuous take: keep the outer box and sealed fish bag visible.
3. Inspect it the same day: check the fish while it remains inside the sealed bag.
4. Float the bag: float the bag for 20–30 minutes before releasing the fish.
5. Release the fish: do not pour the bag water into the aquarium.

Before release, the prepared aquarium should already be within 20–25°C, pH 7.0–8.0 and 10–12 dGH, with ammonia and nitrite at zero.

The fish is hand-packed in pure oxygen inside an insulated poly box, with a heat pack when the weather calls for it, and carried by a licensed live-animal courier. These packing measures do not replace the need to receive, inspect, float and release the fish correctly.

Keep the fish in the sealed bag until the unboxing video has recorded its condition. If anything has gone wrong, contact us the same day with the order number and that continuous unboxing video.

Respond to changes by testing the water first

Learn the fish’s normal swimming, colour, breathing, feeding and use of cover after it settles. Individual fish vary, so a change from that animal’s usual pattern is often more useful than comparing it with a fixed pose or colour shown in a photograph.

If you see a change, take a defined first action

• Hanging at the surface, sitting on the bottom or erratic swimming: test ammonia, nitrite, temperature and the other routine values immediately.
• Faster or slower gill movement: check water quality and filter operation without waiting for the weekly test.
• Darker or paler colour: compare recent water readings, social interactions and feeding.
• More hiding or a change in aggression: review group composition, shelter and the behaviour of every tank mate.
• White spots, fluffy growths, damaged fins, missing scales, ulcers or bumps: record the signs clearly and seek prompt guidance.
• Reduced appetite or changing body condition: check whether the fish can reach food and whether water quality remains stable.

Do not treat a visible symptom by guessing. Several problems can produce similar behaviour, while ammonia or nitrite can harm fish before the water looks dirty. Test first, retain the readings and note when the change began.

If a problem follows arrival, retain the unboxing video and order details as required by the policy. For a later health change, contact us with the water readings, aquarium volume, temperature, stocking list, maintenance history and a clear description of the signs. These details make it easier to distinguish a water-quality issue from feeding or social pressure.

Continue normal observation after the fish appears settled. Weekly testing, controlled feeding and consistent maintenance are preventative decisions, not tasks reserved for visible illness.

Screen every community companion against the same conditions

Treat the red tiger platy as a very peaceful community fish. Seriously Fish says it can be kept with most community species and that even males tolerate one another. That is a starting point rather than a blanket match: each proposed companion still needs compatible water, peaceful behaviour and enough space within the full adult stocking plan.

Use four checks before combining animals

1. Water: the companion must be suitable at 20–25°C, pH 7.0–8.0 and 10–12 dGH.
2. Behaviour: choose peaceful community fish that will not create persistent chasing or prevent normal feeding.
3. Space: retain at least the 60 × 30 cm base and around 54-litre species plan, then increase capacity for the combined group.
4. Feeding: make sure every fish can reach an appropriate ration without excessive leftovers.

Avoid community plans built around soft, acidic water. Seriously Fish states that X. maculatus will not thrive in those conditions. Do not compromise by selecting a value between incompatible requirements; choose animals whose normal ranges overlap fully.

Its own kind is the clearest named social match because OATA suggests at least three platies together. Most peaceful community fish can share the aquarium when they pass all four checks. Apply the same screening method to any other animal rather than assuming the word “community” guarantees compatibility.

Watch the aquarium after every introduction. Persistent hiding, altered feeding, changed colour, unusual breathing or increased aggression means the plan needs reassessment. Test the water at the same time because social stress and water-quality problems can appear through similar changes. Ask us for a stocking assessment with the aquarium dimensions, measured water values and complete resident list before combining animals when the match is uncertain.

Plan companionship and mixed-sex consequences together

OATA suggests keeping at least three platies, using two females to each male. Seriously Fish similarly recommends more females than males because male attention can be relentless. This is a social-planning ratio, not a reason to infer sex from dispatch size, colour or a gallery image.

The species gives birth to live young, and when males and females share the aquarium, batches of fry will be continual. Count retained young in the aquarium’s future stocking plan. The filter and swimming space must support the actual population rather than the number of adults originally introduced.

Dense planting provides cover and will also help spread the males’ attention through the aquarium. Keep open swimming space as well, so cover does not consume the whole 60 × 30 cm base. Position feeding points where each fish can approach without being trapped by a persistent individual.

Males are described as the smaller sex and possess a gonopodium, while OATA describes the female anal fin as triangular. Observe settled adult features if managing an established group, but keep the offer disclosure decisive: this purchase does not promise either sex.

If the group composition creates persistent pressure, do not solve it by adding fish automatically. First check aquarium capacity, water quality and the established ratio. Any addition increases biological load and must be made slowly enough for the filter to respond.

Get direct answers to common buyer questions

How big does Xiphophorus maculatus red tiger get?

Xiphophorus maculatus red tiger reaches a recorded maximum of 4 cm total length according to FishBase; plan its space around an aquarium base of at least 60 × 30 cm rather than body length alone.

What size aquarium does Xiphophorus maculatus red tiger need?

Xiphophorus maculatus red tiger needs a base of at least 60 × 30 cm and a volume of around 54 litres according to Seriously Fish, with more capacity for a larger community or growing fry population.

How many Xiphophorus maculatus red tiger should I keep together?

OATA suggests keeping at least three platies together, two females to each male; this offer does not guarantee sex, so check the ratio after the fish can be sexed.

Is Xiphophorus maculatus red tiger suitable for beginners?

Yes. OATA describes platies as easy to keep, and Seriously Fish regards the species as a strong beginner choice when pH remains above neutral; provide a mature filter and stable, moderately hard water.

What does Xiphophorus maculatus red tiger eat?

Feed a quality flake or granule with a high algae content once a day, limited to what is eaten within a few minutes, and vary it with small live or frozen daphnia, bloodworm or tubifex.

What temperature and pH does it need?

Keep it at 20–25°C, pH 7.0–8.0 and 10–12 dGH; these routine values are the overlap of FishBase, Seriously Fish and OATA.

Is this fish aggressive or a fin nipper?

Seriously Fish describes it as very peaceful and says even males tolerate one another; still observe every new community because persistent chasing, hiding or missed feeding requires reassessment.

Which kinds of animals can it live with?

It can live with its own kind and most peaceful community fish whose needs overlap at 20–25°C, pH 7.0–8.0 and 10–12 dGH; screen every proposed companion for behaviour, space and water compatibility.

How does this fish arrive alive in the UK?

Tropical Fish Co hand-packs it in pure oxygen inside an insulated poly box, with a heat pack when weather calls for it, for carriage by a licensed live-animal courier; receive it in person, film the sealed parcel continuously through opening, inspect it the same day and float the bag for 20–30 minutes before release.

Check the public care references

• FishBase: Xiphophorus maculatus — identity, family, distribution, recorded environment, diet and maximum length.
• Seriously Fish: Xiphophorus maculatus — aquarium dimensions, water conditions, diet, behaviour and livebearer biology.
• OATA: How to look after platies and swordtails — UK group advice on social planning, feeding, water testing and maintenance.
• RSPCA aquarium environment guidance — biological filtration and the aquarium nitrogen cycle.
• Tropical Fish Co delivery policy — packing, receipt, unboxing evidence and acclimatisation steps.