Can Black Moor Goldfish and Molly live together?

Black Moor Goldfish and Molly 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

Black Moor Goldfish vs Molly

Black Moor Goldfish

Carassius auratus var. moor

Molly

Poecilia sphenops

Verdict:Not compatible

Side-by-side specs

Goldfish

Family

Livebearers

8″

Adult size

4″

30gal

Min tank

20gal

65–75°F

Temperature

72–82°F

6.5–8

7.5–8.5

peaceful

Temperament

peaceful

Solitary

Schooling

mid

Water level

mid

Compatibility notes

warnBlack Moor Goldfish and Molly only narrowly overlap in temperature — keep within 72–75°F.
criticalBlack Moor Goldfish produces heavy waste and needs cool water — Molly won't tolerate sharing a tank.

Try both in the builder →Compare different species