Can they live together?

Boeseman's Rainbowfish and Threadfin Rainbowfish compatibility

Compare their preferred water conditions and basic behavior.

Boeseman's Rainbowfish

Boeseman's Rainbowfish

Threadfin Rainbowfish

Threadfin Rainbowfish

Use caution

The shared temperature range (27–28°C) is narrow, so keep it stable.

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

Checked for 6 Boeseman's Rainbowfish and 6 Threadfin Rainbowfish in a 150 L aquarium.

Shared environment

Recommended temperature
27 ~ 28°C

Recommended pH
7.1 ~ 7.5

Suggested group sizes

Boeseman's Rainbowfish: at least 6

Threadfin Rainbowfish: at least 6

Together they need at least 150 L and about 120 cm of length.

Check that your aquarium is large enough for both species.

Side by side

ItemBoeseman's RainbowfishThreadfin Rainbowfish
Average adult sizeabout 11 cm (medium)about 4 cm (small)
Recommended temperature27~29°C24~28°C
Recommended pH7.1~7.96.0~7.5
Water hardnessMedium hardnessMedium hardness
Minimum aquarium150 L, about 120 cm long54 L, about 60 cm long
Group sizeat least 6at least 6
TemperamentGentleGentle
Social behaviorShoaling fishShoaling fish
Swimming zoneupper & middleupper & middle
Activity levelVery highModerate
Waste levelModerateLow
With shrimpadults not recommended, babies not recommendedadults usually fine, babies not recommended
Beginner level3/53/5

보에스마니 레인보우와 스레드핀 레인보우 합사에 필요한 용품

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Frequently asked questions

Can Boeseman's Rainbowfish and Threadfin Rainbowfish live together?

Planner result: Use caution. The shared temperature range (27–28°C) is narrow, so keep it stable. This pairing may work, but monitor behavior and provide suitable conditions.

What water conditions suit both Boeseman's Rainbowfish and Threadfin Rainbowfish?

Keep the water at 27~28°C and pH 7.1~7.5, where both planner ranges overlap. Boeseman's Rainbowfish prefers medium hardness and Threadfin Rainbowfish prefers medium hardness.

How big should an aquarium for Boeseman's Rainbowfish and Threadfin Rainbowfish be?

At least 150 L and about 120 cm long, the larger of the two minimums (Boeseman's Rainbowfish: 150 L, Threadfin Rainbowfish: 54 L). Group sizes add to the bioload, so bigger is safer.

How many Boeseman's Rainbowfish and Threadfin Rainbowfish should I keep?

Boeseman's Rainbowfish: at least 6 (shoaling fish). Threadfin Rainbowfish: at least 6 (shoaling fish).

Do Boeseman's Rainbowfish and Threadfin Rainbowfish have similar temperaments?

Boeseman's Rainbowfish is gentle and swims in the upper & middle; Threadfin Rainbowfish is gentle and swims in the upper & middle. Activity: very high vs moderate.

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.

Boeseman's Rainbowfish

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

Threadfin Rainbowfish

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.