Can Discus and Neon Dwarf Rainbowfish live together?

Discus and Neon Dwarf Rainbowfish are possible with care. The comparison on this page runs the same compatibility engine as the tank builder, checking temperature and pH overlap, predation by size, temperament, and known hard-pair conflicts.

Species Comparison

Discus vs Neon Dwarf Rainbowfish

Discus

Symphysodon aequifasciatus

Neon Dwarf Rainbowfish

Melanotaenia praecox

Verdict:Possible with care

Side-by-side specs

Cichlids

Family

Rainbowfish

6″

Adult size

2.5″

75gal

Min tank

20gal

82–88°F

Temperature

72–82°F

5.5–7

6.5–7.5

peaceful

Temperament

peaceful

Schooling

mid

Water level

mid

Compatibility notes

warnDiscus and Neon Dwarf Rainbowfish only narrowly overlap in temperature — keep within 82–82°F.

Try both in the builder →Compare different species