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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.

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.

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.

  • Wikipedia. Betta splendens

    Encyclopaedia overview; use specialist aquarium sources for your stock's real temperature/pH/footprint needs.

Try this next

Build the full stocking list with Angelfish + Betta

Compare another pairOpen tank builder

Plan further

Try both species in the full-stock tank check, or open either fish profile for mates lists. 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

Other tank mates for Angelfish

Angelfish + Betta — common questions

Can Angelfish live with Betta?
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.
What tank size do you need for Angelfish and Betta together?
For this pair Fishori recommends a minimum of around 150 litres, derived from each species' published minimum and group needs.
What's the main risk?
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.
What else should I check?
Both Angelfish and Betta share a semi-aggressive temperament.