All species

Discus

Symphysodon aequifasciatus

Wants warm, clean, soft water and company of its own kind.

What it needs

Grows to
18 cm
Smallest sensible tank
250 L, at least 120 cm long
Temperature
27 to 30 °C
pH
6 to 7.2
Hardness
1 to 8 dGH
Kept in
groups of 5 or more
Temperament
peaceful
Eats
omnivore
Swims
at every level
How hard
hard
Lives
about 10 years

These are the figures the stocking advice is built on. Make a room and it will tell you whether discus fit the tank you have.