Can Discus and Golden Wonder Killifish live together?

Discus and Golden Wonder Killifish are not compatible. 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 Golden Wonder Killifish

Discus

Symphysodon aequifasciatus

Golden Wonder Killifish

Aplocheilus lineatus

Verdict:Not compatible

Side-by-side specs

Cichlids

Family

Killifish

6″

Adult size

4″

75gal

Min tank

20gal

82–88°F

Temperature

72–80°F

5.5–7

6–7.5

peaceful

Temperament

semi-aggressive

Schooling

Solitary

mid

Water level

top

Compatibility notes

criticalDiscus (82–88°F) and Golden Wonder Killifish (72–80°F) need different temperatures.

Try both in the builder →Compare different species