Can Fancy Guppy and Pearlscale Goldfish live together?

Fancy Guppy and Pearlscale Goldfish 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

Fancy Guppy vs Pearlscale Goldfish

Fancy Guppy

Poecilia reticulata

Pearlscale Goldfish

Carassius auratus var. pearlscale

Verdict:Not compatible

Side-by-side specs

Livebearers

Family

Goldfish

2″

Adult size

6″

10gal

Min tank

30gal

72–82°F

Temperature

65–75°F

6.8–7.8

6.5–8

peaceful

Temperament

peaceful

Schooling

Solitary

top

Water level

mid

Compatibility notes

warnFancy Guppy and Pearlscale Goldfish only narrowly overlap in temperature — keep within 72–75°F.
criticalPearlscale Goldfish produces heavy waste and needs cool water — Fancy Guppy won't tolerate sharing a tank.

Try both in the builder →Compare different species