Can fancy goldfish live with severums?

Verdict

No. Fancy goldfish and severums should not share a tank. Fancy goldfish are coldwater animals (65–74°F); severums need 74–84°F. They meet only at 74°F, the edge of both ranges.

Fancy goldfish65–74°F · pH 7–8

Severum74–84°F · pH 6–7

What to watch

Deal breakerFancy goldfish are coldwater animals (65–74°F); severums need 74–84°F. They meet only at 74°F, the edge of both ranges.
Watch outWater chemistry is a squeeze. The only pH that suits both is around 7.

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

	Fancy goldfish	Severum
Temperature	65–74 °F	74–84 °F
pH	7–8	6–7
Adult size	6.0 in	8.0 in
Minimum tank	30 gal	55 gal
Temperament	Peaceful	Semi-aggressive
Swims at	All levels	Middle
Group	Alone or in pairs	Alone or in pairs
Diet	Omnivore	Omnivore

Better tank mates for fancy goldfish

All fancy goldfish tank mates

Better tank mates for severums

All severum tank mates

Questions

Can fancy goldfish live with severums?

No. Fancy goldfish and severums should not share a tank. Fancy goldfish are coldwater animals (65–74°F); severums need 74–84°F. They meet only at 74°F, the edge of both ranges.

What temperature suits both fancy goldfish and severums?

74–74 °F. Fancy goldfish need 65–74 °F, severums need 74–84 °F.

What size tank do fancy goldfish and severums need together?

At least 55 gal, set by the severum. Add space for each extra fish.