Platinum White Angelfish (Pterophyllum scalare)

Recognise the platinum white form and its adult shape

The Platinum White Angelfish is a domestic colour form of Pterophyllum scalare, a freshwater cichlid from the Amazon basin that reaches approximately 15 cm. Platinum describes its colour rather than a separate species, locality or additional part of its scientific name. It suits a prepared intermediate keeper who can provide a large, tall aquarium, stable warm water and active management of changing cichlid relationships.

FishBase places Pterophyllum scalare in the cichlid family Cichlidae. It describes wild adults living among dense aquatic and river-edge vegetation in swamps and flooded ground, where the water may be clear or silty. That natural history makes tall plants, roots and upright wood sensible layout inspiration, while leaving open water for turning and feeding.

The wild species occurs across parts of the Amazon basin in Peru, Colombia and Brazil, with further records from French Guiana and Guyana. Eschmeyer’s Catalog of Fishes recognises Pterophyllum scalare as the accepted name. The platinum aquarium form should not be treated as a distinct wild population or assigned a separate geographical origin.

Plan for height as well as length

Adult-size figures use different measurements. FishBase carries a 15 cm total-length maximum from an aquarium reference as well as a current 10.5 cm total-length field maximum. Our angelfish guidance therefore plans around approximately 15 cm total length, while the extended dorsal and anal fins may produce an overall height of about 20–25 cm. Individual proportions can vary, but a shallow aquarium chosen around the dispatch measurement is not an adult plan.

This is an intermediate-care fish in our range. The individual jobs are straightforward—test the water, feed measured portions and maintain the filter—but the aquarium must be large and tall enough before purchase. The keeper must also recognise exclusion, fin damage and territorial defence early enough to separate fish safely.

Choose by dispatch size without shrinking the adult plan

One purchase supplies one animal of the selected size. Use the live size selector to choose the dispatch label that suits your established aquarium and feeding plan. The labels are 3,5-4 cm, 5,5 - 6 cm, 3-3,5 cm, 2.5-3 cm, 6-7 cm, 4.0-4.5 cm and XL 7-8 cm.

The size you select is the size supplied, not the adult size. Every choice needs the same permanent provision for a tall adult angelfish. A larger dispatch measurement does not identify sex, guarantee a pair bond or reduce the need to manage future territorial behaviour. Choose food particles the fish can take cleanly and make sure filter intakes, gaps in decor and access to food are suitable for the selected size.

Sex is guaranteed only when the selected option explicitly states male or female. This Platinum White Angelfish listing has no sex-guaranteed option.

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. The visible example shows the platinum form’s pearly-white body and long translucent fins, but individual appearance can vary. Compare other forms through the angelfish collection only after settling the adult space and social plan.

Use these adult planning numbers

Our complete freshwater angelfish care guide recommends roughly 200 litres, a footprint of about 100 × 40 cm and around 50 cm usable height for an adult pair. Seriously Fish likewise gives approximately 200 litres and 100 × 40 × 50 cm as the smallest aquarium it would consider. More space is needed for a group or community, and dimensions remain as important as the nominal volume.

OATA’s broad American-cichlid guidance gives at least 120 litres for a compatible pair of smaller species, requires sufficient height for angelfish and advises a pair or group at minimum. We use the more conservative 200-litre planning point for an adult pair. Routine water targets are 24–27°C, pH 6.5–8.0 and 5–12 dGH, chosen within the angelfish ranges and OATA guidance.

Provide an adult-sized aquarium from the outset

Use roughly 200 litres, a 100 × 40 cm footprint and about 50 cm of usable height as the planning point for an adult pair. Usable height means the clear swimming depth after allowing for substrate, decor, equipment and the space beneath the lid. A nominally tall aquarium can still be unsuitable if hardscape leaves the fish unable to turn or extend its fins freely.

The 100 cm length and 40 cm width provide horizontal movement and territory as well as volume. Height alone is not enough: a narrow column may accommodate the fins vertically while denying an adult adequate turning room. Conversely, a long but shallow aquarium can restrict the dorsal and anal fins despite carrying a large litre figure.

Check dimensions in the right order

1. Measure the internal aquarium length, width and filled height rather than relying only on the model name.
2. Allow for substrate, wood, plants, internal filters and other objects that reduce swimming space.
3. Keep an open route through the aquarium where an adult can turn without its fins brushing sharp surfaces.
4. Place visual barriers around territory boundaries without dividing the aquarium into cramped dead ends.
5. Reserve additional space for other fish rather than treating the pair figure as a complete community allowance.

A group needs substantially more room than an adult pair because several fish must be able to feed, retreat and avoid uninterrupted pursuit. Litres alone cannot calculate that provision. Group size, pair formation, aquarium shape, decor, filtration and the size of other inhabitants all change how much usable territory remains.

Do not use the smallest fish label to justify a temporary aquarium with no adult route. Moving a growing angelfish later depends on another suitable, mature aquarium being ready at the right time. Establishing the permanent dimensions first removes that risk and lets the fish settle into a stable layout.

Hold stable water within the routine care range

Maintain 24–27°C, pH 6.5–8.0 and approximately 5–12 dGH as the routine target. These values sit within FishBase’s 24–30°C, pH 6.0–8.0 and 5–13 dGH range and within the compatible part of the American-cichlid guidance. Seriously Fish gives 24–30°C, pH 6.0–7.4 and 0–15 dGH for aquarium care. The pH target follows the FishBase–OATA overlap and our store guidance; Seriously Fish uses a narrower upper limit of 7.4.

Measure the aquarium before introducing the fish and record the result rather than adjusting water towards a guessed ideal. Use a thermometer as well as the heater setting. Test pH and hardness before making any change to tap-water preparation, because the same recipe can produce different results in different homes.

The water chemistry guide explains how pH, GH and KH relate to aquarium stability. Once you have measured values, use the water matcher to compare the aquarium with the stated range. The purpose is to identify a mismatch before the animal is introduced, not to encourage repeated adjustments to a stable aquarium that already sits within range.

Respond to a reading, not a target on paper

• If temperature drifts outside 24–27°C, check the thermometer, heater operation and room conditions before changing the setting.
• If ammonia or nitrite is detectable, treat the result as urgent and protect water quality immediately.
• If pH differs sharply between aquarium and replacement water, identify the reason before a large change.
• If hardness needs alteration, measure both the starting water and the prepared replacement water.
• If behaviour changes after maintenance, recheck temperature, ammonia, nitrite and pH.

Stability does not mean ignoring harmful waste. It means avoiding unnecessary swings in temperature, pH or hardness while acting promptly on detectable ammonia or nitrite. Make elective chemistry changes gradually and base them on repeated measurements rather than appearance, postcode or a fixed mixing ratio.

Build biological filtration before adding the fish

Use a fully established biological filter before introducing the angelfish. The RSPCA explains that fish release toxic ammonia, which a working biological filter converts first to nitrite and then to the safer nitrate. Both ammonia and nitrite must remain at zero detectable levels.

A calendar date does not demonstrate that the filter can process waste. Test the aquarium and confirm its performance before adding livestock. If this is your first setup, follow the steps for a prepared and mature first aquarium before choosing a dispatch size.

Seriously Fish uses a turnover of four to five times the aquarium volume each hour as a practical reference for an approximately 200-litre setup, equivalent to a filter rating around 800–1000 litres per hour. Ratings are planning figures rather than a promise of actual flow once media, pipework and head height are included. Arrange the outlet so it supports oxygen exchange without making the fish struggle continuously against a harsh current.

Protect the filter’s useful biology

• Check intakes and gaps so the selected-size fish cannot become trapped or injured.
• Inspect the filter for reduced flow, blocked inlets and trapped debris during routine maintenance.
• Rinse dirty media lightly in aquarium water removed during a water change.
• Do not run established biological media under the tap because chlorine or chloramine may damage beneficial bacteria.
• Avoid replacing all established media at the same time.
• Keep the filter running consistently and investigate an unexpected loss of flow.

For a worked example, a 200-litre aquarium multiplied by four gives 800 litres per hour, while multiplying by five gives 1000 litres per hour. That calculation is a starting point for choosing equipment. The final layout must still provide gentle areas where an angelfish can hold position and rest while maintaining circulation through the whole aquarium.

Increase livestock gradually because every added animal and every increase in feeding raises the waste load. Test after a stocking change instead of assuming the existing bacterial population will adjust immediately. Detecting a rise early gives you a chance to protect the fish before appetite, breathing or swimming deteriorates.

Shape the layout around long fins and changing territory

Create a mixture of upright cover and open swimming room. Tall leafy plants and vertical wood echo the densely vegetated habitats used by wild freshwater angelfish, while clear lanes let the adult turn and approach food without dragging its fins. Use smooth surfaces and remove sharp points from the routes the fish uses regularly.

Vertical structure also breaks direct lines of sight. This matters when fish establish a hierarchy or a pair starts defending part of the aquarium. A barrier works only if the pursued fish can move beyond it into usable space; a dense wall that creates a blind corner may trap the weaker animal instead.

Watch how the fish uses the structure

During the first weeks, note where the fish rests, feeds and retreats. Open fins, steady swimming and free movement through the full aquarium indicate that the layout is usable. Repeated hovering in one corner, reluctance to cross an exposed area or persistent pursuit around a barrier means the arrangement needs attention.

Broad leaves, slate, aquarium glass or another upright surface may become a spawning site. Seriously Fish describes angelfish laying eggs on vertical surfaces and guarding eggs and fry. Spawning can turn a previously shared area into defended territory, so do not interpret breeding behaviour as proof that the community still has enough room.

Secure wood, stones and other decor so digging or maintenance cannot make them fall. Leave access to siphon trapped waste and inspect the fish from more than one angle. A visually complex aquarium remains practical only when you can see whether each fish is eating, breathing regularly and keeping its fins intact.

Review the layout whenever the social pattern changes. Moving one sight-line barrier can sometimes interrupt pursuit, but persistent exclusion requires suitable separation rather than repeated rearrangement. Prepare that separate accommodation before relying on decor to resolve a serious conflict.

Plan a compatible pair or a deliberately managed group

Do not keep a single angelfish merely because it is convenient for the aquarium. OATA advises that angelfish should be kept as a pair or group at minimum and warns that a fish kept alone may become stressed. FishBase gives five or more when keeping a group, while Seriously Fish recommends small groups because members may squabble with their own kind.

A compatible pair is not the same as two fish selected at random. Sex is difficult to determine reliably outside spawning, and even two fish of different sexes would not guarantee a stable bond. Watch how both animals share food, cover and open water rather than using purchase quantity as evidence of compatibility.

Choose the social route before purchase

When a group forms pairs, hierarchy and access can change quickly. One fish may be driven away from food, confined behind decor or repeatedly chased across open water. Torn fins, weight loss, darkened or pale colour, hiding and reduced feeding are reasons to act rather than signs that every hierarchy should be left alone.

Prepare a second mature, heated and filtered aquarium or a realistic rehoming route before conflict begins. A divider can be useful only when each side still provides adequate height, swimming room, filtration and shelter. Dividing an already marginal aquarium does not create two suitable homes.

Breeding can intensify territorial defence around eggs and fry. Both parents may guard the site, and other inhabitants may repeatedly enter the defended area. Decide in advance whether the pair will remain in a community or move to suitable dedicated accommodation; do not wait until another fish is injured.

Count feeding access as part of social care. A fish that reaches the food first is not necessarily thriving if it spends the rest of the day chasing others. Observe the whole group before and after feeding, and separate any individual facing persistent exclusion.

Feed a complete staple in measured daily portions

Freshwater angelfish are omnivorous. Seriously Fish notes that wild fish feed predominantly on zoobenthos such as small crustaceans and other aquatic invertebrates, while aquarium fish accept pellet or flake food and live or frozen items. Use that biology to provide a complete staple with suitable variety rather than relying on one rich treat.

Feed a nutritionally complete cichlid pellet, granule or suitable flake in a particle size the selected fish can swallow cleanly. Add appropriate frozen or freeze-dried foods such as daphnia, brine shrimp or bloodworm for variety. OATA advises feeding once a day and offering only what the fish consume within a few minutes.

A controlled study of different feed types in freshwater angelfish found that feed composition affected growth and reproductive performance. It supports taking diet quality seriously, but it does not turn one tested feed into a universal household menu.

Make sure every fish eats

Watch the whole pair or group rather than the quickest animal. If one fish blocks access, distribute a measured portion across more than one feeding point while staying within the few-minute limit. Confirm that subordinate fish take food instead of assuming that food disappearing means everyone has eaten.

Overfeeding creates excess faeces and uneaten food, increasing the load on the filter and contributing to toxic waste. If food remains after a few minutes, remove it and reduce the next measured portion. If appetite falls suddenly, test water and inspect breathing, swimming, body condition and social access before offering repeated alternatives.

Bloodworm, brine shrimp and other attractive foods are additions rather than complete diets by themselves. Maintain a consistent staple and use variety to complement it, not to reward selective feeding or conceal a continuing appetite problem.

Complete a measured weekly maintenance routine

Start with a partial water change of 25% at least once a week, as advised for American cichlids by OATA. Treat that percentage as a practical starting routine. Test results, stocking, feeding, filter performance and accumulated waste determine whether the aquarium needs adjustment.

For a 200-litre aquarium, 25% of the nominal volume is 50 litres. The actual water volume may be lower after substrate and decor, so consistency and measurements matter more than false precision. Prepare replacement water with tap-water conditioner to address chlorine or chloramine and match temperature closely before adding it.

Use the same order each week

1. Observe breathing, swimming, appetite, fin position and social access before disturbing the aquarium.
2. Test ammonia and nitrite, which should remain at zero detectable levels.
3. Measure nitrate often enough to identify a rising trend; OATA advises keeping it within 20 mg/l above the normal tap-water level.
4. Remove approximately 25% as the starting change and siphon accessible solid waste.
5. Condition and temperature-match replacement tap water before adding it.
6. Check the filter for blockages and rinse dirty media only in removed aquarium water when cleaning is needed.
7. Inspect the heater, lid, intakes and decor before recording the results.

A regular record lets you see gradual changes that are easy to miss from day to day. Note the readings, water-change amount, filter flow and any change in feeding or aggression. If nitrate rises faster from one week to the next, examine stocking, feeding, trapped waste and filtration rather than automatically making a chemistry adjustment.

Do not wait for cloudy water or distressed behaviour before maintaining the aquarium. Equally, avoid replacing all filter media or making abrupt elective changes during routine work. The goal is a stable environment with predictable waste control.

Prepare arrival and monitor the first week closely

Have the mature, heated and filtered aquarium ready before the animal arrives. Confirm 24–27°C, zero detectable ammonia and nitrite, suitable pH and hardness, secure decor and a protected filter intake. Keep the social plan settled so the new fish is not introduced while the aquarium is being substantially rearranged.

Follow the current delivery and Live Arrival Guarantee policy. Someone must be present to receive the parcel. Film every delivery continuously from the sealed parcel onward, including the parcel being opened and the fish still inside the sealed bag. Float the bag for 20–30 minutes before releasing the fish, and never pour the bag water into the aquarium.

First-day sequence

1. Be present to receive the parcel and start filming while it is still sealed.
2. Open the parcel in one continuous take and show the fish still inside the sealed bag.
3. Float the bag for 20–30 minutes.
4. Acclimatise the fish slowly before releasing it.
5. Never pour the bag water into the aquarium.

After release, concentrate on steady swimming, regular breathing and the ability to hold position. Do not use immediate display colour as the sole health test. The gallery is representative, and an individual fish need not match the exact brightness of the example under different aquarium lighting.

First-week checkpoints

Add further fish slowly because the established bacterial population must respond to every increase in waste and feeding. Do not combine a new arrival with several unrelated stocking changes if that makes water or social problems difficult to identify.

If the fish is repeatedly chased, cannot feed or is confined to one small area, use the prepared separation plan. Waiting for visible injury turns an observable access problem into a more serious welfare risk.

Respond to health changes with water tests first

A settled angelfish should show steady swimming, regular breathing, clear eyes, open fins, an appropriate body profile and consistent feeding. Learn the individual’s normal pattern so a change in balance, appetite, breathing or social access is noticed promptly.

RSPCA fish-health guidance supports watching appearance and behaviour alongside water quality. Clamped or damaged fins, gasping, erratic swimming, unusual balance, white spots, fluffy growths, wounds, marked weight change, persistent hiding or sudden loss of appetite require action, but a visible sign alone is not a diagnosis.

Use a water-first response

1. Test ammonia, nitrite, nitrate and temperature immediately.
2. Check pH where a water change, new preparation method or equipment problem may have altered it.
3. Compare current behaviour with the fish’s normal feeding, swimming and social access.
4. Photograph visible signs and record when they began.
5. Isolate the fish only if the separate aquarium is mature, heated, filtered and suitable.
6. Contact a fish vet or specialist aquatic retailer for qualified diagnosis and lawful treatment guidance.

Detectable ammonia or nitrite is urgent because even small amounts can stress American cichlids. Protect water quality promptly while avoiding abrupt elective pH, hardness or temperature changes. A waste emergency and a planned chemistry adjustment require different responses.

Do not apply a universal temperature increase, combine medicines or use preventive medication without a diagnosis. In the UK, use only a lawful product labelled for the species and aquarium system, following its instructions or veterinary direction.

If a fish leaves the aquarium, return it to suitable water immediately using wet hands or a wet soft net, minimise handling and inspect breathing, balance and injury. Check and secure the lid, then seek fish-veterinary advice if recovery is abnormal.

Screen every proposed companion at adult size

Freshwater angelfish can live in a carefully planned robust community, but compatibility is conditional. Seriously Fish describes the species as generally peaceful while noting that it may squabble with its own kind and eat small fish such as tetras. OATA advises mixing calmer American cichlids only with appropriately robust companions under compatible conditions.

Avoid very small fish that an adult angelfish may swallow, persistent fin-nippers that can damage the extended fins and highly aggressive companions likely to create chronic conflict. Tiny shrimp and fry also face predation risk. These are screening categories rather than a promise about every individual encounter.

Use five checks before mixing species

Assess adult dimensions rather than the size seen at purchase. A fish that looks too large to swallow when young may still become prey if its adult body remains small, while a peaceful juvenile companion may develop territorial behaviour of its own. Compare permanent needs before relying on present appearance.

Different swimming levels may reduce direct competition, but they do not guarantee compatibility. Bottom-dwelling fish still need adequate floor area and matching water, and they may enter a spawning pair’s defended territory. Faster surface feeders can leave a slower or subordinate angelfish underfed even when no visible attack occurs.

Observe feeding access, fin condition, breathing, hiding and use of space after any introduction. Occasional display is different from persistent pursuit that prevents another fish from eating or resting. Use suitable separation when the pattern does not settle.

For a stocking and compatibility assessment, contact us with the aquarium’s dimensions, measured water, existing species and adult quantities. The answer depends on the whole aquarium rather than a universal tank-mate list.

Prepare for pair formation before community conflict begins

Angelfish relationships can change as a pair forms or breeding begins. A fish that previously shared open water may start defending a vertical spawning surface and the surrounding territory. This change can affect other angelfish as well as community fish that repeatedly cross the defended area.

Do not assume another angelfish colour form is automatically a compatible addition. The fish share the same general body shape, swimming space and potential interest in vertical territory. Crowding several forms into a pair-sized aquarium does not create a stable display and may leave a subordinate fish with nowhere to retreat.

Distinguish display from harmful exclusion

A sight-line barrier should give the pursued fish access to a genuine refuge, not merely conceal it from the keeper. Check behind plants and wood during feeding. If one animal remains hidden, loses condition or cannot cross the aquarium safely, the social plan is failing even if the dominant fish appears healthy.

Keep backup accommodation fully mature, heated and filtered. A temporary uncycled container may exchange aggression for poor water quality. Make sure the separated fish still has appropriate height, turning room, cover and access to food.

When planning a group of five or more, provide substantially more space than the adult-pair figure and expect the arrangement to change if pairs form. There is no single litre multiplier that accounts for aquarium shape, visual barriers, individual temperament and community stocking. The safe decision is to preserve surplus territory and a realistic route for moving fish.

Compatibility must be reassessed rather than declared permanent. Recheck after introductions, growth, layout changes and spawning behaviour. A pairing that worked for months may require a different arrangement once territory or feeding access changes.

Answer the key buying and care questions

How big does a Platinum White Angelfish get?

A Platinum White Angelfish reaches approximately 15 cm total length, while its extended fins can produce an overall height of about 20–25 cm.

What size aquarium does Pterophyllum scalare need?

Plan roughly 200 litres, a 100 × 40 cm footprint and about 50 cm usable height for an adult pair; a group or community requires more room and a separation plan.

How many Platinum White Angelfish should I keep together?

Keep a compatible pair or a deliberately managed group; FishBase gives five or more for a group, which needs substantially more space and backup accommodation.

Is Pterophyllum scalare suitable for beginners?

Pterophyllum scalare is an intermediate-care fish suited to a prepared keeper who can maintain a mature tall aquarium and respond promptly to territorial conflict.

What does a Platinum White Angelfish eat?

Feed a complete cichlid pellet, granule or suitable flake once daily, offering only what is eaten within a few minutes and adding appropriate frozen or freeze-dried variety.

What temperature and pH does this fish need?

Tropical Fish Co uses the FishBase–OATA overlap of 24–27°C, pH 6.5–8.0 and 5–12 dGH, with zero detectable ammonia and nitrite.

Is it aggressive or likely to nip fins?

It is generally peaceful but may squabble with its own kind and defend a spawning territory; the main fin risk described for its community is exposure to persistent fin-nipping companions.

Which animals can it live with?

Choose calm, robust companions too large to swallow, with compatible water, territory and feeding behaviour; avoid very small fish, tiny shrimp and fry at predation risk, persistent fin-nippers and highly aggressive companions.

How does it arrive alive in the UK?

Start filming every delivery continuously while the parcel is still sealed. Someone must be present to receive it; film the parcel being opened with the fish still in the sealed bag, float the bag for 20–30 minutes, acclimatise slowly and never pour the bag water into the aquarium.

Consult the care and identity references

• FishBase: Pterophyllum scalare — identity, family, distribution, recorded environment, biology and length.
• Seriously Fish: Pterophyllum scalare — aquarium dimensions, water, diet, behaviour and reproduction.
• OATA: How to look after American cichlids — water, feeding, maintenance, social care and compatibility.
• RSPCA: Aquarium environment — filtration and the aquarium nitrogen cycle.
• RSPCA: Fish health and welfare — visible health signs and water-quality response.
• Eschmeyer’s Catalog of Fishes — accepted scientific identity and distribution.
• Kasiri, Farahi and Sudagar: angelfish feed study — growth and reproductive performance under tested diets.