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Compatibility

Compatibility brief

Can Angelfish live with Discus?

Angelfish

Angelfish

Pterophyllum scalare

semi-aggressive~20cm
Discus

Discus

Symphysodon sp.

peaceful~20cm
VerdictCAUTION

Caution. Check the issues below before buying.

Angelfish + Discus: Caution advised. Both South American cichlids, but angelfish are too aggressive and too active for most discus. Discus need warm calm water (28 C+); angels become bullies in the same volume. Specialist setups can mix them, beginner tanks should not. Outcomes still depend on your tank shape, maintenance routine, and individual fish.

Compatibility score

55/100

Profile confidence: medium

Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.

Min tank

200L

Combined minimum footprint reference for these two species: about 200L (larger active fish often want more length).

Temperature
Range in °C28–30°C shared
AngelfishDiscusShared window
pH
Range6.5–7 shared
AngelfishDiscusShared window
Temperament / behaviour

Both are South American cichlids, but angelfish are often more assertive about midwater territory while discus want calmer, warmer water and impeccable quality. Keepers who succeed usually run a large, mature tank biased toward discus needs and accept that angels may stress shy discus. This is a specialist compromise, not a default community mix.

Assessment details

  1. Caution advised

    Top issue

    Both South American cichlids, but angelfish are too aggressive and too active for most discus. Discus need warm calm water (28 C+); angels become bullies in the same volume. Specialist setups can mix them, beginner tanks should not.

  2. Temperament difference

    Angelfish is semi-aggressive, while Discus is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.

  3. Narrow temperature overlap

    Angelfish and Discus have only a narrow shared temperature range. Maintaining stable water temperature will be important.

“Both South American cichlids, but angelfish are too…”

Caution advised

Next steps

Concrete changes, not "research more" filler.

  • •If you combine them, size the tank for adult discus first, keep temperature toward the discus range, and be ready to rehome angels that bully.
  • •Provide plenty of hiding spots and visual breaks so Discus can escape if harassed.
  • •Discus should be kept in a group of at least 4 for best health and behaviour.
Sources from both profiles
Only URLs that exist on the species records are shown. We do not fabricate citations.

Try this next

Build the full stocking list with Angelfish + Discus

Compare another pairOpen tank builder

Plan further

Check each species’ mates list, size the glass, then verify the full stock in the builder. Methodology explains how verdicts are produced.

Individual fish vary in personality. Fishori uses conservative hobby rules. Observe any new introduction closely, feed thoughtfully, and keep a quarantine or backup plan. This is not veterinary advice.

Profile data confidence: high. Checked against several solid care sources that mostly agree.

Full tank-mate guides

Related pair checks

Angelfish + Discus — common questions

Can Angelfish live with Discus?
Yes, if you plan for it. The verdict is CAUTION: water and temperament can align in a large specialist tank, but angels may still stress discus. Build for discus standards, not shop-tank optimism.
What tank size do you need for Angelfish and Discus together?
Plan around 200 litres as the working minimum. That figure comes from each species' published minimum and their group needs, and it assumes adult sizes, not shop sizes.
What's the main risk?
Temperament difference. That is the first thing to plan around. The matching entry under assessment details on this page explains the reasoning and the numbers behind it.
What should you check before buying?
Provide plenty of hiding spots and visual breaks so Discus can escape if harassed. Discus should be kept in a group of at least 4 for best health and behaviour.