Lake Kutubu rainbowfish vs Crescent betta: can they live together?

Verdict: With caution

Their temperature ranges only just meet, at 24°C (75°F).
A pH of 7.0 suits both.
Minimum tank for the pair: 210 L (55 US gal)

Side by side

	Lake Kutubu rainbowfish	Crescent betta
Adult size	10 cm (3.9 in)	6 cm (2.4 in)
Minimum tank	210 L (55 US gal)	40 L (11 US gal)
Temperature	20–24°C (68–75°F)	24–30°C (75–86°F)
pH	7.0–8.0	6.0–7.0
Hardness	9–12 dGH (161–214 ppm)	5–19 dGH (89–339 ppm)
Temperament	Peaceful	Peaceful
Community tank	Good	Good
Care level	Easy	Easy
Diet	Omnivore	Omnivore