Bleeding-heart tetra vs Black ghost: can they live together?

Verdict: Not recommended

The Black ghost is aggressive towards other fish.
An adult Black ghost is about 8 times the length of a Bleeding-heart tetra and may eat it.
Both are comfortable at 23–28°C (73–82°F).
A pH of 6.0–7.2 suits both.

Side by side

	Bleeding-heart tetra	Black ghost
Adult size	6 cm (2.4 in)	50 cm (20 in)
Minimum tank	75 L (20 US gal)	210 L (55 US gal)
Temperature	23–28°C (73–82°F)	23–28°C (73–82°F)
pH	5.6–7.2	6.0–8.0
Hardness	3–12 dGH (54–214 ppm)	5–10 dGH (89–178 ppm)
Temperament	Peaceful	Aggressive
Community tank	Good	Good
Care level	Easy	Moderate
Diet	Omnivore	Omnivore