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Compatibility

Compatibility brief

Can Angelfish live with Betta?

Angelfish

Angelfish

Pterophyllum scalare

semi-aggressive~20cm
Betta

Betta

Betta splendens

semi-aggressive~7cm
VerdictRISKY

Risky. This mix is commonly discouraged for typical setups.

Angelfish + Betta: Known incompatible pairing. Two midwater labyrinth fish claiming the same vertical band. Male bettas flare at angel fins; adult angels outgrow and harass a slow betta. Specialist display tanks sometimes wall them off — a normal community footprint fails. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.

Compatibility score

30/100

Profile confidence: medium

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

Min tank

150L

Combined minimum footprint reference for these two species: about 150L (larger active fish often want more length).

Temperature
Range in °C24–30°C shared
AngelfishBettaShared window
pH
Range6.5–7.5 shared
AngelfishBettaShared window
Size / predation

Angelfish (20cm adult) may treat small Betta (~7cm) as food once grown — plan adult sizes, not shop sizes.

Temperament / behaviour

Both fish claim midwater and flare colourful fins at rivals. In an average community layout they often read each other as competition rather than as tank mates. Damage can arrive as torn fins or chronic chasing even when water parameters overlap. This is a space-and-temperament clash, not a chemistry problem you can fix with a water change.

Assessment details

  1. Known incompatible pairing

    Top issue

    Two midwater labyrinth fish claiming the same vertical band. Male bettas flare at angel fins; adult angels outgrow and harass a slow betta. Specialist display tanks sometimes wall them off — a normal community footprint fails.

  2. Compatible temperaments

    Both Angelfish and Betta share a semi-aggressive temperament.

  3. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Two midwater labyrinth fish claiming the same vertical band”

Known incompatible pairing

Next steps

Concrete changes, not "research more" filler.

  • •Keep male bettas alone or with carefully chosen quiet companions. Give angelfish a tall tank with dither fish that do not advertise long fins in the same sight line.

Try instead

  • →Build a species-only tank for the larger fish, or restock with fish too large to be eaten at adult sizes.
Sources from both profiles
Only URLs that exist on the species records are shown. We do not fabricate citations.
  • Seriously Fish. Pterophyllum scalare

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

  • FishBase. Pterophyllum scalare

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

  • Wikipedia. Pterophyllum scalare

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

  • Seriously Fish. Betta splendens

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

  • FishBase. Betta splendens

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

  • Wikipedia. Betta splendens

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

Try this next

Build the full stocking list with Angelfish + Betta

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 + Betta — common questions

Can Angelfish live with Betta?
For most keepers, no. The verdict is RISKY: two midwater fish that flash fins and hold territory tend to stress or injure each other in ordinary home tanks. Pick one centrepiece species rather than forcing both into the same column of water.
What tank size do you need for Angelfish and Betta together?
Plan around 150 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?
Known incompatible pairing. That is the check that fails outright for this pair. The matching entry under assessment details on this page explains the reasoning and the numbers behind it.