All species

Green neon tetra

Paracheirodon simulans

Warmer and softer than a neon wants. Not a beginner swap for one.

What it needs

Grows to
2.5 cm
Smallest sensible tank
40 L, at least 45 cm long
Temperature
24 to 29 °C
pH
4 to 6.5
Hardness
1 to 6 dGH
Kept in
groups of 10 or more
Temperament
peaceful
Eats
omnivore
Swims
at every level
How hard
moderate
Lives
about 3 years

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