Can Cardinal Tetra and German Blue Ram live together?

Cardinal Tetra and German Blue Ram 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

Cardinal Tetra vs German Blue Ram

Cardinal Tetra

Paracheirodon axelrodi

German Blue Ram

Mikrogeophagus ramirezi

Verdict:Possible with care

Side-by-side specs

Tetras

Family

Cichlids

2″

Adult size

2″

20gal

Min tank

20gal

73–81°F

Temperature

78–85°F

4.5–7

5.5–7

peaceful

Temperament

peaceful

Schooling

Solitary

mid

Water level

mid

Compatibility notes

warnCardinal Tetra and German Blue Ram only narrowly overlap in temperature — keep within 78–81°F.

Try both in the builder →Compare different species