Can flowerhorns live with severums?

Verdict

Yes, with care

Yes, with care. Flowerhorns and severums can share a tank, but watch one thing. Water chemistry is a squeeze. The only pH that suits both is around 7.

Flowerhorn80–89°F · pH 7–8

Severum74–84°F · pH 6–7

What to watch

Watch outWater chemistry is a squeeze. The only pH that suits both is around 7.
Watch outFlowerhorns are aggressive. Severums hold their own only in a big tank with places to hide.

What works

Both are fine at 80–84°F.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

	Flowerhorn	Severum
Temperature	80–89 °F	74–84 °F
pH	7–8	6–7
Adult size	12.0 in	8.0 in
Minimum tank	75 gal	55 gal
Temperament	Aggressive	Semi-aggressive
Swims at	Middle	Middle
Group	One per tank	Alone or in pairs
Diet	Carnivore	Omnivore

Better tank mates for severums

All severum tank mates

Questions

Can flowerhorns live with severums?

Yes, with care. Flowerhorns and severums can share a tank, but watch one thing. Water chemistry is a squeeze. The only pH that suits both is around 7.

What temperature suits both flowerhorns and severums?

80–84 °F. Flowerhorns need 80–89 °F, severums need 74–84 °F.

What size tank do flowerhorns and severums need together?

At least 75 gal, set by the flowerhorn. Add space for each extra fish.