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Should I buy it?

African freshwater butterflyfish

Pantodon buchholzi

Also known as: african butterfly fish, freshwater butterflyfish, Freshwater butterflyfish

VerdictCAUTION
Evidence: partially verified
Confidence: high
Beginner fit: caution
peaceful
intermediate care

Fishori provides conservative planning guidance, not guarantees.

Based on multiple reputable aquarium care sources with strong agreement. Use the numbers here as planning defaults — your room, water, and routine still shape real-world outcomes.

Min tank
150L
Adult (plan)
~10cm
Group min
1
Temp
2330°C

A surface-dwelling predator with a flat body that blends with surface debris. Eats anything at the surface. Peaceful with mid- and bottom-dwellers it can't reach.

Best for

Biotope or specialist tanks 150L or more with large peaceful mid and bottom companions and floating plant cover.

Avoid if

Surface-dwelling fish or any species small enough to be swallowed at the surface.

Top things that go wrong

  1. Fin-nipping risk in typical community layouts. Fin-nipping risk toward long-finned or slow tank mates when the school is understocked, bored, or kept in a tank too short to spread out in.
  2. Mouth gap vs tiny tank mates. Predation risk toward smaller tank mates. The figure that matters is the adult mouth size against the adult prey length, not the juvenile sizes in the shop.
  3. Shrimp & snails. Shrimp: not safe. The fish will eat adult shrimp, shrimp fry, or both, depending on the size of the shrimp.

Common mistakeMixing with other surface fish. African butterfly fish are territorial at the water surface and will attack anything in their zone.

What most shops don't tell you

  • 1.Predation risk scales with gape, night feeding, and crowding. 'they grew up together' is a schedule, not a law.
  • 2.Classed peaceful for similar-sized community use. Still a bite-sized risk toward fry or very small comm fish in small volumes.
  • 3.Tall narrow tanks with almost no top length. The fish cannot patrol or feed naturally.
  • 4.Communities led by tiny top-water tetras. The butterfly picks them off at the surface.
  • 5.Lid gaps are the leading exit route. If you can slide a business card under a corner, assume the fish can leave through it. Feed at the surface and re-check that midwater tank mates are not the right size to be swallowed by your import.

About this species

African butterflyfish are surface-only ambush predators from the Congo basin. They hover under the meniscus and strike insects at the waterline, then swallow anything that fits the mouth. The mouth is wider than the body suggests, so neons and guppies are food, not tank mates.

Similar fish
Same category, closest min-tank on file.
Related fish
Same care level & temperament, similar volume band.
Commonly paired with African freshwater butterflyfish
Other species that list this fish as a safe or "best with" direction.

No reverse lookups on file yet.

Plan grid

Key limits are shown above; this section adds planning detail: pH band, swim level, bioload and activity, and the radar.

pH
5.5 – 7.2
Bioload (guide)
high
From Fishori trait map
Activity (guide)
low
Flow medium · O₂ medium

Swim zones

Planning trait chart

Six indices for comparing species on paper before you spend.

Planning trait radar for this speciesBeginner easePeacefulnessCommunity fitSmall-tank fitHardinessEnergy
  • Beginner ease32
  • Peacefulness36
  • Community fit3
  • Small-tank fit97
  • Hardiness54
  • Energy24

Numbers are deterministic planning indices from Fishori fields — not a scientific score of your individual fish.

Adult size (why it matters)
Plan stocking around 10 cm adult total length. Males, females, and individual strains can land a centimetre or two on either side, but that is the figure to budget swim space against, not the juvenile size in the shop tank.
Tank volume (what we mean)
150L is the planning floor for adult swimming space and bioload headroom. Long-term, a 200L+ tank lets adults use the full footprint without crowding the next species. Footprint, meaning length and front-to-back depth, matters as much as raw volume for active or territorial species.

Common setup sketches

Conservative patterns from Fishori fields — still run the pair checker for every species you add; sketches are not a stocking guarantee.

Beginner-style peaceful community (planning sketch)

Rough 150L+ layout: one calm centrepiece, 8–12 small tetras/rasboras, 6–8 corydoras-type bottom fish — verify every name in the pair checker before buying.

Safe directions on file include: Boesemani Rainbowfish, Bala / silver shark, Giant danio.

Tank mate intelligence

Use the "Often compatible" lists as a shortlist, not a stocking plan. Always run the pair tool and check the footprint of your actual tank first. Verify behaviour for African freshwater butterflyfish against your own reading before you buy.

Safest directions
Risky / situational

Read the blocking rule on each pair page before experimenting.

Avoid pairing

Do-not-stock combinations on conservative hobby rules.

Compare with

Run a real pair check: African freshwater butterflyfish + Boesemani Rainbowfish

If African freshwater butterflyfish is the wrong pick — try instead
Safer directions on file, same conservative rules as the rest of the library. The best/avoid test lives in the card at the top of the page, not here.

Behaviour, temperament, and what to watch

Prose and lists come from the same record: read temperament first, then glass-level signals so you are not surprised after day three.

Temperament in the tank

African freshwater butterflyfish is peaceful in mixed company. Fin-nipper when the school is understocked, bored, or kept in a tank too short to spread out in. Treats any fish small enough to fit in its mouth as food. Mouth size at adult length matters, not the prey's listed adult size.

Stress / aggression triggers on file

  • Small groups or boredom
  • Long-finned or slow tank mates
  • Bare tanks without structure

Fin nipping: Fin-nipping risk toward long-finned or slow tank mates when the school is understocked, bored, or kept in a tank too short to spread out in.

Predation: Predation risk toward smaller tank mates. The figure that matters is the adult mouth size against the adult prey length, not the juvenile sizes in the shop.

Territory: Not strongly territorial, but still claims a working area in the tank. Give it room to settle without overlapping the next species' patch.

Planted tanks: goodeasy plant ideas

In the glass: typical and warning signs

Typical behaviour
  • Often calm on the glass — bursts of movement around food or tank disturbance.
Stress signals
  • Clamped fins, gasping at the surface, hiding non-stop, or refusing food after the first week.
  • Rapid breathing when parameters swing — fix ammonia/nitrite first, then reassess mates.
Aggression signals
  • Chasing one individual repeatedly, torn fins on tank mates, or food theft every feed.
When to separate or rethink
  • Separate or rehome if injuries appear, one fish is pinned, or feeding becomes a daily chase.
  • If water is stable but behaviour worsens, reduce stocking or remove the highest-impact species first.

Fish behaviour can vary between individuals and tank setups. Always observe new fish closely after introduction.

Care parameters: water, food, inverts, grouping

Chemistry and group rules sit here so you are not re-reading the same line from tank mate or temperament blocks. Swim level is in the plan grid above.

Water, feeding, inverts

Hardness

soft

Diet

carnivore

Small invertebrates, frozen bloodworm or daphnia, and protein-rich prepared foods. Rotate the menu and feed by appetite rather than by clock.

Shrimp & snails

Shrimp: not safe. The fish will eat adult shrimp, shrimp fry, or both, depending on the size of the shrimp.

Grouping & social needs

Kept singly or as a paired setup. Check the species profile before doubling up in one tank.

Breeding behaviour depends on the species. Research before you buy a mixed-sex group of this fish.

Before you buy — checklist
Tick mentally in the shop — every box should be true before you pay.
  • Hold 23 to 30 °C steadily on a real thermometer, not the dial on the heater.
  • Aim for pH 5.5 to 7.2 and a hardness you can re-test in two weeks. A one-time strip in the shop car park is not a water test.
  • Footprint: short wide tanks and tall narrow tanks fish differently for the same volume. Match the tank shape to the swim pattern, not just the litre count.
  • Tank volume meets or exceeds 150L published minimum for adults.
  • Heater can hold 23–30°C without cooking cooler-water tank mates.
  • No known fin-nippers paired with long-finned fish unless you accept documented risk.
  • No tank mates small enough to fit the adult mouth gap for this species.

Explore and stocking hubs

Same library as the rest of Fishori: tank-mate index for this species, category peers, guides, and litre-based stocking lists where min tank on file is within the hub volume.

Plan with tools

Pair-level rules and multi-fish stocking use the same conservative engine — add this fish in the tank builder only after mates pass pair checks.

Filtration & heating

A 150L minimum tank needs a filter rated for at least 600L/hr turnover and a heater to hold 2330°C reliably.

Plant suggestions

African freshwater butterflyfish does well in planted tanks. Plants compatible with 2330°C and pH 5.57.2:

Sources & evidence

Profile status: partially verified · Evidence tier: high · 3 linked source(s). Fishori does not fabricate citations.

Fishori uses conservative planning rules based on these sources.

Confidence is explained in the summary at the top of this page (same tier as here), not repeated below.

How Fishori evaluates compatibility (same logic as pair and tank tools).

  • Seriously Fish. Pantodon buchholzi

    Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).

  • FishBase. Pantodon buchholzi

    Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.

  • Wikipedia. Pantodon buchholzi

    Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.

Evidence notes

  • The Seriously Fish profile for the binomial in this record was successfully reached as the primary aquarium reference.
  • FishBase contributes natural-range size and habitat context. Translate those numbers through your heater, your water report, and your tank footprint before stocking.
  • Wikipedia is only cited if the article URL returned OK. Use it for orientation, not as the only care sheet for an import.
  • All compatibility text reflects typical hobby experience and the Fishori model. Individual fish, shop stress, and the order tank mates are added in can still defy a single-paragraph label.
  • Fishori profiles work from typical aquarium trade sizes and hobby care norms. Specialist site checks and literature review for this species are not yet recorded here, so the ranges on this page are planning numbers rather than guarantees.