Pterophyllum scalare manacapuru

Decide whether this angelfish fits your plan

Pterophyllum scalare manacapuru is a freshwater angelfish in the cichlid family Cichlidae. Its scientific identity is Pterophyllum scalare, a South American species from the Amazon basin in Brazil, Colombia and Peru, with its documented range also extending into French Guiana and Guyana. Plan for an adult length of 15 cm. This fish suits an intermediate keeper who can provide a mature, tall aquarium, measured water conditions and a practical response to territorial behaviour.

FishBase describes adults living among dense aquatic and riverbank vegetation in swamps and flooded ground, where the water may be clear or silty. It also places the species in freshwater, benthopelagic habitats and lists it as Least Concern. These wild details support a planted, structured aquarium, but they do not make one exact plant or substrate compulsory.

Eschmeyer’s Catalog of Fishes accepts the name Pterophyllum scalare. “Manacapuru” identifies this particular trade presentation, while the species-level care plan remains centred on P. scalare.

The intermediate rating reflects the combination of adult space, social planning, long fins and potential cichlid aggression. Our complete freshwater angelfish care guide expands on those decisions without treating every angelfish or aquarium as identical.

Understand the exact offer

One purchase supplies one live fish. The dispatch grade is 6–7 cm, which describes the fish at dispatch rather than its adult length. Build the permanent aquarium around the 15 cm adult plan and the space occupied by the tall dorsal and anal fins, not around the compact body of the arriving fish.

Sex is guaranteed only when the selected option explicitly states male or female. This Pterophyllum scalare manacapuru listing has no sex-guaranteed option. Angelfish can be difficult to sex outside spawning, so do not build a pair plan around forehead shape, fin angle, colour or the appearance of a gallery animal.

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 gallery scene shows a silver angelfish with dark vertical bands, orange across the upper body and long blue-grey fins among green plants. Treat those details as a description of the pictured fish rather than a colour promise for the individual supplied.

Make the adult decisions before purchase

• Space: reserve roughly 200 litres, a 100 × 40 cm footprint and about 50 cm of usable height for an adult pair.
• Social plan: prepare for a compatible pair or a deliberately managed group, with a second suitable aquarium or rehoming route if conflict develops.
• Water: establish 24–27°C, pH 6.5–7.4 and 5–12 dGH before the fish arrives.
• Community: exclude fish small enough to be swallowed, fin-nippers and highly aggressive competitors.
• Routine: use a mature biological filter, weekly testing and measured feeding rather than reacting only when the aquarium looks cloudy.

You can compare the wider angelfish collection after deciding which adult dimensions, temperament and social arrangement fit your aquarium. Colour alone is not a care rating, and a different appearance does not remove the need for tall space or a territorial-management plan.

Plan space around adult height and length

Use roughly 200 litres, a footprint of at least 100 × 40 cm and about 50 cm of usable height as the adult-pair plan. Seriously Fish gives an aquarium measuring 100 × 40 × 50 cm, approximately 200 litres, as the smallest arrangement to consider for this species. Its recommendation reflects the need for both horizontal turning room and vertical clearance around the extended fins.

Plan for a 15 cm adult length. FishBase also carries a current field maximum of 10.5 cm total length, but the 15 cm figure is the appropriate conservative planning value used throughout this page. Do not interpret the 6–7 cm dispatch grade as a juvenile tank allowance or a reason to postpone the permanent setup.

Check usable dimensions, not just the label

• Height: measure from the substrate surface to the normal waterline after allowing for deep substrate, wood and equipment.
• Footprint: preserve open turning room alongside planted or wooded areas; litres held in a narrow, awkward shape do not guarantee usable territory.
• Obstructions: position heater guards, intakes and hard decor so the long fins do not have to pass through tight gaps.
• Group space: treat 200 litres as the adult-pair plan, not a universal capacity for a group or a busy community.

OATA gives at least 120 litres as its industry floor for a pair of smaller American cichlids and separately says an adult angelfish aquarium must be sufficiently tall. Our preferred plan is the more conservative species-focused figure of roughly 200 litres. Extra inhabitants, unresolved pair formation or repeated chasing can require substantially more space even when water tests remain acceptable.

A worked check is straightforward: a nominal 200-litre aquarium that loses substantial height to a deep substrate may fail the 50 cm usable-height aim, while a taller aquarium still needs the 100 × 40 cm footprint. Choose the aquarium by all three dimensions and the social plan, then confirm that decor leaves an adult route through the tank.

Keep water stable within the shared range

Keep this angelfish at 24–27°C, pH 6.5–7.4 and 5–12 dGH. These routine values are the overlap of FishBase’s species range, Seriously Fish’s aquarium range and OATA’s American-cichlid guidance. OATA gives 22–27°C, pH 6.5–8.0 and 4–12 dGH for the group, not a species-specific optimum.

Aim for stability inside the overlap rather than repeatedly adjusting the aquarium towards a single “ideal” reading. Measure the established aquarium and the water used for changes. Abrupt shifts in temperature, pH or mineral content can create a new problem even when the final number sits inside the stated range.

Use each measurement to make a decision

If GH, KH and pH are unfamiliar, use our water chemistry guide before changing the source water. Enter measured values in the water matcher as a comparison aid, then keep the complete range and aquarium context in view.

Do not copy a fixed mixture of reverse-osmosis and tap water without testing both components. Source water differs between households, and changing GH or KH can also alter pH stability. Prepare replacement water consistently, treat tap water for chlorine or chloramine and avoid abrupt elective changes.

Establish filtration before adding the fish

Add this angelfish only after tests show zero detectable ammonia and nitrite in a mature, filtered aquarium. The RSPCA’s aquarium guidance explains that a working biological filter supports bacteria that convert toxic ammonia into nitrite and then into the safer nitrate. Clear water alone cannot show that this biological process is working.

If you are preparing a new system, follow the steps in our first tropical aquarium guide and base the decision on test results rather than the number of weeks since setup. Each added fish and each increase in feeding adds waste, so increase the aquarium population slowly enough for the biological filter to respond.

Use a measured weekly routine

1. Test ammonia and nitrite at least weekly and keep both at zero detectable levels.
2. Check nitrate against the aquarium’s established baseline and the normal tap-water value.
3. Change 25% of the water at least once a week, using conditioned replacement water.
4. Siphon settled waste from accessible substrate without stripping every surface clean at the same time.
5. Check the filter for reduced flow or blockages.
6. If media needs cleaning, rinse it lightly in removed aquarium water; do not run it under the tap.

Seriously Fish suggests four to five turnovers of aquarium volume per hour for an approximately 200-litre setup, corresponding to a filter rated around 800–1000 litres per hour. Treat the rating as a starting point because media, pipework and maintenance affect actual flow. Angelfish prefer gentler movement, so distribute the return rather than forcing them to hold position in a harsh jet.

Increase testing after a new fish is added, after a filter interruption or when feeding changes. If ammonia or nitrite appears, reduce further loading, protect oxygenation and deal with the cause immediately rather than waiting for the next scheduled water change.

Build a tall, structured layout

Combine tall planting or vertical wood with open water where an adult can turn freely. Wild Pterophyllum scalare inhabit densely vegetated swamps and flooded ground, while Seriously Fish recommends tall leafy plants and gentle water movement in the aquarium. The goal is a layout that offers cover and visual separation without filling every route with hard obstacles.

Give each part of the layout a job

• Vertical structure: use tall plants or securely positioned wood to break long sight lines between angelfish.
• Open turning area: leave a clear route where long dorsal, anal and ventral fins can pass without brushing sharp decor.
• Substrate: fine aquarium gravel or sand suits the broad American-cichlid guidance and is easier to siphon than inaccessible pockets of coarse debris.
• Filter return: direct flow so the surface exchanges gases while the fish can move out of the strongest current.
• Intakes: cover hazardous openings and keep them accessible for inspection.

Secure every heavy item before adding fish. American cichlids may dig or sift substrate, so a rock or branch must not depend on loose gravel for stability. Check artificial plants and wood for rough edges that could catch extended fins.

Observe how the angelfish uses the aquarium. A fish that can feed, rest and move behind a visual barrier has more behavioural choice than one exposed in a bare tank. Persistent hiding, confinement to one corner or repeated interception at a narrow passage means the layout or social arrangement needs changing.

Keep maintenance practical. Dense planting is useful only when you can still inspect the fish, remove uneaten food, siphon waste and reach the filter. Before settling on a design, trace an unobstructed adult route through the aquarium and identify at least two separated resting areas.

Feed a complete staple with measured variety

Feed a nutritionally complete cichlid pellet, granule or suitable flake as the staple, then add appropriate frozen or freeze-dried foods for variety. Seriously Fish describes P. scalare as omnivorous and notes that wild fish feed predominantly on zoobenthos such as small crustaceans and other aquatic invertebrates. Aquarium fish accept quality dried foods and relish live or frozen items.

OATA’s American-cichlid guidance supplies the practical schedule: offer only what the fish can consume within a few minutes, once a day. Watch each individual rather than judging the portion by how quickly the boldest fish reaches it. Remove uneaten food before it breaks down and adds avoidable waste.

Build the menu around clear roles

Bloodworm, brine shrimp or another attractive item is a supplement, not the whole diet. A controlled angelfish feeding study demonstrates that feed composition affects growth and reproductive performance, reinforcing the value of a balanced staple without creating one fixed household menu.

If one fish repeatedly misses food, change how the meal is distributed and inspect the social arrangement. Spreading suitable food across more than one feeding point can reduce interception by a dominant fish. Reduced appetite, spitting food or a changing body profile is a health observation that should trigger water tests and closer inspection, not an automatic increase in treats.

Choose a compatible pair or planned group

Keep a compatible pair or plan a group of at least 5 with substantially more space and an exit plan. FishBase’s aquarium guidance says groups of 5 or more, while OATA says angelfish should be kept as a group or pair at minimum and warns that a singleton may become stressed. A pair means two fish that are compatible; two fish chosen at random are not automatically a pair.

Seriously Fish describes the species as generally peaceful but notes that it may squabble with its own kind. Territorial behaviour can intensify during pair formation and breeding. More fish therefore creates both social opportunities and more possible points of conflict, so group planning must include visual barriers, feeding access and a suitable way to separate fish.

Watch the group at practical checkpoints

• At every meal: confirm that each fish reaches food rather than waiting behind cover until the meal ends.
• During daily observation: look for repeated chasing, cornering, fin damage or one fish being excluded from open water.
• During the first week: compare use of space and breathing with the first settled observations, while continuing extra water tests after the added biological load.
• During the first month: reassess whether a pair, subgroup or persistent aggressor has changed the original stocking plan.

Short displays or occasional disagreements are different from sustained exclusion. Act when one fish cannot feed, cannot leave a corner, develops damaged fins or is chased whenever it enters open water. Rearranging sight lines may help, but it must not become a reason to leave an injured or chronically excluded fish in place.

Prepare the exit route before conflict begins. A second aquarium must itself be mature, suitably sized and within the same water range. If the plan relies on rehoming, identify a realistic route before adding the group rather than waiting until a fish requires urgent separation.

Follow the arrival steps in order

Receive the parcel in person and start filming while it is still sealed. Follow the current delivery and Live Arrival Guarantee policy in this order:

1. Start a continuous video with the sealed parcel and outer box visible before opening it.
2. Open the parcel in the same continuous take.
3. Show the fish inside the sealed bag before anything is disturbed.
4. Open and inspect the parcel on the day it arrives.
5. Float the bag for 20–30 minutes before releasing the fish.
6. Do not pour the bag water into the aquarium.
7. For a Live Arrival Guarantee claim, send the unboxing video and order number the same day.

The fish is packed in pure oxygen inside an insulated box, with a heat pack when weather calls for it, and carried by a licensed live-animal courier. Someone must be present to receive the parcel because live fish cannot be left unattended.

Confirm the aquarium before release

Separately from the parcel procedure, confirm that the aquarium is mature, that ammonia and nitrite are zero, and that temperature, pH and hardness sit within the established plan. OATA advises adding fish slowly because the biological filter must respond whenever livestock and feeding increase.

After release, observe swimming, breathing and the response of established inhabitants. Keep the planned feeding routine rather than using a large meal as a settling test. Continue additional water testing after the new biological load enters the aquarium, and act promptly if ammonia or nitrite becomes detectable.

Respond to health changes with water tests

Test water immediately when swimming, breathing, colour, condition or appetite changes. Healthy fish normally show steady swimming, regular breathing, clear eyes, open undamaged fins, intact scales, a consistent body profile and reliable feeding. Compare each fish with its normal appearance and behaviour rather than waiting for several signs to appear together.

OATA highlights surface hanging, bottom sitting, erratic swimming, unusually fast or slow gill movement, increased hiding, colour change, white spots, fluffy growths, missing fins or scales and loss of interest in food. The RSPCA’s fish-health guidance also supports checking husbandry and water quality promptly when signs change.

Use a water-first response

1. Measure ammonia, nitrite, nitrate and temperature immediately; check pH where a chemistry shift is possible.
2. Treat detectable ammonia or nitrite as urgent and protect filtration and oxygen exchange while dealing with the cause.
3. Record the signs, their timing, recent livestock additions, maintenance and feeding changes.
4. Move a fish only when the separate aquarium is mature, suitably sized and likely to reduce rather than increase stress.
5. Seek qualified fish-health advice when breathing, balance, wounds, spots, growths or appetite remain abnormal.

A visible sign is not a diagnosis. White spots, unusual faeces, flashing or head lesions can have different causes, so do not respond with a universal temperature increase or preventive medication recipe. In the UK, use only a lawful product labelled for the species and aquarium system, following its directions or veterinary instruction.

If an angelfish leaves the aquarium, return it to suitable aquarium water immediately using wet hands or a wet soft net, minimise handling and inspect breathing, balance and visible injury. Check the lid and openings before leaving the aquarium unattended.

Screen community fish before mixing

Use adult size, fin behaviour, temperament, water overlap, feeding speed and territory to screen every proposed companion. Angelfish can sometimes live in a robust community, but they remain cichlids and may defend a pair or spawning site. No companion choice removes the need to watch feeding access, fins and use of space.

Avoid very small fish that may be swallowed, including small tetras. Avoid fin-nippers because they can damage the extended dorsal, anal and ventral fins. Avoid highly aggressive fish and much faster-feeding species that can create chronic competition. These exclusions remain important even when temperature and pH overlap.

Run the same checks in the same order

OATA permits calmer American cichlids such as angelfish in a robust community with appropriately robust, larger shoaling fish. That is a screening category, not a universal list. Assess the exact shoaling species by its adult dimensions, water range, feeding behaviour and temperament.

Reassess after introduction and during pair formation. Repeated chasing, damaged fins, missed meals or confinement to one part of the aquarium means the combination is failing even if the species are often described as community fish.

Apply the rules to common companion plans

A compatible angelfish pair is the clearest adult social plan, while a community requires case-by-case screening. Use the examples below as decisions rather than promises about individual behaviour.

Worked companion decisions

• Another randomly chosen angelfish: use caution. Two fish are not automatically a compatible pair, and either may exclude the other as they mature.
• A planned group of at least 5: possible with substantially more space, broken sight lines, distributed feeding and a separation or rehoming plan.
• Appropriately robust, larger shoaling fish: possible after confirming adult size, water overlap, temperament, feeding speed and sufficient space.
• Small tetras: avoid them because angelfish may eat small fish.
• Fin-nipping fish: avoid them because the angelfish’s extended fins are vulnerable to damage.
• Highly aggressive fish: avoid them because combining territorial pressure can create persistent stress and injury.
• Much faster-feeding fish: avoid them when they prevent the angelfish or subordinate group members from eating properly.

Do not use different swimming levels as the only compatibility test. Fish still share water quality, oxygen, feeding opportunities and the aquarium’s total footprint. A bottom-oriented fish may also occupy floor area needed for decor, maintenance and territory separation.

Make a written response plan before mixing fish: identify which signs trigger action, where a separated fish can go and how water conditions will be matched. Persistent exclusion, fin injury or missed meals requires a change in stocking or separation; it is not a behaviour to leave indefinitely while waiting for the fish to “sort it out”.

Whenever the aquarium gains inhabitants, repeat ammonia and nitrite tests more frequently. A socially calm combination can still overload filtration, while excellent water tests cannot make an aggressive combination acceptable.

Answer the main angelfish questions

How big does Pterophyllum scalare manacapuru get?

Plan for an adult length of 15 cm. FishBase and the Tropical Fish Co care guide support this planning figure, while the tall dorsal and anal fins also make vertical aquarium space essential. The 6–7 cm dispatch grade is not the adult size.

What size aquarium does Pterophyllum scalare manacapuru need?

Use roughly 200 litres with a footprint of at least 100 × 40 cm and about 50 cm of usable height for an adult pair. Seriously Fish gives this species-focused minimum, and Tropical Fish Co uses it as the preferred adult-pair plan. A group or community needs more room.

How many Pterophyllum scalare manacapuru should I keep together?

Keep a compatible pair or plan a group of at least 5. FishBase advises groups of 5 or more, while OATA says angelfish should be kept as a group or pair at minimum and warns that a singleton may become stressed. Two randomly chosen fish are not automatically a compatible pair.

Is Pterophyllum scalare manacapuru suitable for beginners?

Tropical Fish Co rates it intermediate because it needs a mature tall aquarium, measured water conditions and active management of pair formation or territorial behaviour. A prepared keeper with a separation plan can manage it, but it is not a shortcut around cycling, testing or adult-space planning.

What does Pterophyllum scalare manacapuru eat?

Feed a complete cichlid pellet, granule or suitable flake as the staple, with appropriate frozen or freeze-dried variety. OATA advises one daily portion eaten within a few minutes. Seriously Fish records an omnivorous diet with wild feeding focused mainly on small crustaceans and other aquatic invertebrates.

What temperature and pH does it need?

Keep it at 24–27°C, pH 6.5–7.4 and 5–12 dGH. These values are the overlap of FishBase, Seriously Fish and OATA guidance; OATA’s figures apply to American cichlids as a group. Maintain stable measured conditions rather than chasing a single ideal value.

Is it aggressive or does it nip fins?

Plan for territorial aggression rather than assuming a completely peaceful community role. It may squabble with its own kind, especially during pair formation or breeding. Its long fins are vulnerable to fin-nipping companions, so avoid fin-nippers and act if chasing, exclusion or damage persists.

Which kinds of animals can it live with?

It can sometimes share a robust community with appropriately robust, larger shoaling fish whose adult size, water needs, temperament and feeding speed fit the aquarium. Avoid very small fish, including small tetras that may be swallowed, as well as fin-nippers, highly aggressive fish and much faster-feeding competitors.

How does this fish arrive alive in the UK?

Start filming with the parcel still sealed, then open it in one continuous take and show the fish inside the sealed bag. Receive the parcel in person, inspect it that day, float the bag for 20–30 minutes before releasing, and never pour bag water into the aquarium. For a Live Arrival Guarantee claim, send the video and order number the same day. Packing uses pure oxygen, an insulated box and a heat pack when weather calls for it; a licensed live-animal courier carries the parcel.

Check the public references

• FishBase — Pterophyllum scalare: identity, family, distribution, habitat, environmental range, size, social guidance and conservation status.
• Seriously Fish — Pterophyllum scalare: aquarium dimensions, water conditions, diet, layout, behaviour and compatibility.
• OATA — How to look after American cichlids: UK group guidance for water, social care, feeding, maintenance and compatibility.
• RSPCA — Aquarium filters: biological filtration and toxic-waste processing.
• RSPCA — Fish health and welfare: health observations and water-quality-first action.
• Eschmeyer’s Catalog of Fishes: accepted scientific identity, family placement and distribution.
• Kasiri, Farahi and Sudagar: controlled study of feed types in freshwater angelfish.
• Tropical Fish Co delivery policy: packing, receipt, acclimatisation and Live Arrival Guarantee procedure.