Lake Kutubu rainbowfish vs Black ghost: can they live together?

Verdict: Not recommended

The Black ghost is aggressive towards other fish.
An adult Black ghost is about 5 times the length of a Lake Kutubu rainbowfish and may eat it.
Both are comfortable at 23–24°C (73–75°F).
A pH of 7.0–8.0 suits both.

Side by side

	Lake Kutubu rainbowfish	Black ghost
Adult size	10 cm (3.9 in)	50 cm (20 in)
Minimum tank	210 L (55 US gal)	210 L (55 US gal)
Temperature	20–24°C (68–75°F)	23–28°C (73–82°F)
pH	7.0–8.0	6.0–8.0
Hardness	9–12 dGH (161–214 ppm)	5–10 dGH (89–178 ppm)
Temperament	Peaceful	Aggressive
Community tank	Good	Good
Care level	Easy	Moderate
Diet	Omnivore	Omnivore