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Compatibility

Compatibility brief

Can Betta live with Zebra Danio?

Betta

Betta

Betta splendens

semi-aggressive~7cm
Zebra Danio

Zebra Danio

Danio rerio

peaceful~5cm
VerdictCAUTION

Caution. Check the issues below before buying.

Betta + Zebra Danio: Temperament difference. Betta is semi-aggressive, while Zebra Danio is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely. Outcomes still depend on your tank shape, maintenance routine, and individual fish.

Compatibility score

70/100

Profile confidence: medium

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

Min tank

60L

Combined minimum footprint reference for these two species: about 60L (larger active fish often want more length).

Temperature
Range in °C24–26°C shared
BettaZebra DanioShared window
pH
Range6.5–7.5 shared
BettaZebra DanioShared window
Temperament / behaviour

Temperament gap (semi-aggressive vs peaceful) — needs space, structure, and careful observation, not a “drop and forget” mix.

Assessment details

  1. Temperament difference

    Top issue

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

  2. Narrow temperature overlap

    Betta and Zebra Danio have only a narrow shared temperature range. Maintaining stable water temperature will be important.

“Betta is semi-aggressive, while Zebra Danio is peaceful”

Temperament difference

Next steps

Concrete changes, not "research more" filler.

  • •Provide plenty of hiding spots and visual breaks so Zebra Danio can escape if harassed.
  • •Zebra Danio should be kept in a group of at least 6 for best health and behaviour.
Sources from both profiles
Only URLs that exist on the species records are shown. We do not fabricate citations.
  • 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.

  • Seriously Fish. Danio rerio

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

  • FishBase. Danio rerio

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

  • Wikipedia. Danio rerio

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

  • Wikipedia. Danio rerio (zebra danio)

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

Try this next

Build the full stocking list with Betta + Zebra Danio

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

Betta + Zebra Danio — common questions

Can Betta live with Zebra Danio?
Yes, if you plan for it. The verdict is CAUTION, which means the pairing works when specific conditions are met, not by default. The first condition: Provide plenty of hiding spots and visual breaks so Zebra Danio can escape if harassed.
What tank size do you need for Betta and Zebra Danio together?
Plan around 60 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?
Zebra Danio should be kept in a group of at least 6 for best health and behaviour.