Can Harlequin Rasbora and Pearlscale Goldfish live together?

Harlequin Rasbora 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

Harlequin Rasbora vs Pearlscale Goldfish

Harlequin Rasbora

Trigonostigma heteromorpha

Pearlscale Goldfish

Carassius auratus var. pearlscale

Verdict:Not compatible

Side-by-side specs

Rasboras

Family

Goldfish

2″

Adult size

6″

15gal

Min tank

30gal

72–81°F

Temperature

65–75°F

6–7.5

6.5–8

peaceful

Temperament

peaceful

Schooling

Solitary

mid

Water level

mid

Compatibility notes

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

Try both in the builder →Compare different species