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TankMinded

Can Betta Fish Live With Scarlet Badis?

By Alex WalshLast reviewed Apr 18, 2026
No

No, scarlet badis grow just 0.8 inches and are micro-predators. Bettas will eat them or stress them to death.

Why

Minimum shared tank
10 gallons
Shared temperature range
76-79°F

What could go wrong

Bettas will either eat scarlet badis directly or harass them until the tiny fish dies from stress and starvation.

If you keep them in separate tanks

Sized for the 10 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.

AquaClear 20 Power Filter

Rated for up to 10 gallons with enough biological media to handle the waste from both species.

Eheim Jager 100W Thermostat Heater

Holds a steady temperature inside the 76-79°F window both species need.

API Freshwater Master Test Kit

Keep ammonia, nitrite, and nitrate in check. Two-species tanks have more bioload and less margin for error than single-species setups.

Better pairings to consider

Bettas do well with peaceful community fish of similar size like corydoras or otocinclus. Scarlet badis do best as a species-only setup in 10-20 gallons with tiny tankmates like cherry shrimp.

Related compatibility questions

Keep reading

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Frequently Asked Questions