All species

Congo tetra

Phenacogrammus interruptus

What it needs

Grows to
8.5 cm
Smallest sensible tank
200 L, at least 100 cm long
Temperature
23 to 28 °C
pH
6 to 7.5
Hardness
3 to 18 dGH
Kept in
groups of 6 or more
Temperament
peaceful
Eats
omnivore
Swims
at every level
How hard
easy

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