Can they live together?

Betta and Endler's Livebearer compatibility

Compare their preferred water conditions and basic behavior.

Betta

Betta / Siamese Fighting Fish

Endler's Livebearer

Endler's Livebearer

Use caution

The shared pH range (7.2–7.5) is narrow, so watch for water changes.

  • This pairing may work, but monitor behavior and provide suitable conditions.

Checked for 1 Betta and 3 Endler's Livebearer in a 38 L aquarium.

Shared environment

Recommended temperature
24 ~ 27°C

Recommended pH
7.2 ~ 7.5

Suggested group sizes

Betta: at least 1

Endler's Livebearer: at least 3

Together they need at least 38 L and about 45 cm of length.

Check that your aquarium is large enough for both species.

Side by side

ItemBettaEndler's Livebearer
Average adult sizeabout 7 cm (medium)about 2.5 cm (nano)
Recommended temperature24~27°C24~28°C
Recommended pH6.5~7.57.2~8.2
Water hardnessMedium hardnessMedium hardness
Minimum aquarium38 L, about 45 cm long38 L, about 45 cm long
Group sizesingle is fineat least 3
TemperamentTerritorialGentle
Social behaviorBest kept aloneSocial
Swimming zoneupper & middleupper & middle
Activity levelLowHigh
Waste levelLowLow
With shrimpadults use caution, babies not recommendedadults usually fine, babies not recommended
Beginner level3/55/5

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Frequently asked questions

Can Betta and Endler's Livebearer live together?

Planner result: Use caution. The shared pH range (7.2–7.5) is narrow, so watch for water changes. This pairing may work, but monitor behavior and provide suitable conditions.

What water conditions suit both Betta and Endler's Livebearer?

Keep the water at 24~27°C and pH 7.2~7.5, where both planner ranges overlap. Betta prefers medium hardness and Endler's Livebearer prefers medium hardness.

How big should an aquarium for Betta and Endler's Livebearer be?

At least 38 L and about 45 cm long, the larger of the two minimums (Betta: 38 L, Endler's Livebearer: 38 L). Group sizes add to the bioload, so bigger is safer.

How many Betta and Endler's Livebearer should I keep?

Betta: can be kept singly (best kept alone). Endler's Livebearer: at least 3 (social).

Do Betta and Endler's Livebearer have similar temperaments?

Betta is territorial and swims in the upper & middle; Endler's Livebearer is gentle and swims in the upper & middle. Activity: low vs high.

Sources & review

Each species' values are cross-checked against the references below and normalized into the planner's own ranges; the verdict comes from the planner's published rules. No text or images are copied.

Betta

Review confidence A on an A–C scale (A is highest); last reviewed 2026-10-07.

Endler's Livebearer

Review confidence A on an A–C scale (A is highest); last reviewed 2026-10-07.

How compatibility is checked

Try it in my aquarium

This is a guide. Individual behavior and aquarium conditions can change the outcome.