Bloodfin tetra vs Slim betta: can they live together?

Verdict: With caution

The Slim betta can be semi-aggressive or nip fins.
Both are comfortable at 24–28°C (75–82°F).
A pH of 6.5–7.5 suits both.
Minimum tank for the pair: 75 L (20 US gal)

Side by side

	Bloodfin tetra	Slim betta
Adult size	5.5 cm (2.2 in)	10 cm (3.9 in)
Minimum tank	75 L (20 US gal)	75 L (20 US gal)
Temperature	18–28°C (64–82°F)	24–30°C (75–86°F)
pH	6.0–8.0	6.5–7.5
Hardness	10–30 dGH (178–535 ppm)	5–15 dGH (89–268 ppm)
Temperament	Peaceful	Semi-aggressive
Community tank	Excellent	Good
Care level	Easy	Easy
Diet	Omnivore	Omnivore