Ryukin Goldfish tank mates
Carassius auratus
5 rated pairings from the Ryukin Goldfish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Ryukin Goldfish needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.Fancy Goldfish
Carassius auratus (fancy varieties)
30 gal min · 8" adult · Peaceful
Ryukins are best housed with other fancy goldfish varieties that share similar water needs and competitive feeding behavior
Black Moor Goldfish
Carassius auratus
20 gal min · 7" adult · Peaceful
Compatible fancy goldfish with similar size, temperament, and water parameter requirements
Oranda Goldfish
Carassius auratus
20 gal min · 8" adult · Peaceful
Another fancy variety that matches Ryukin vigor and feeding competitiveness
Good matches
2 · Compatible with normal care — watch space and numbers.
Gold Mystery Snail
Pomacea bridgesii
5 gal min · 2" adult · Peaceful
Snails help with algae control; Ryukins may occasionally nip at them but generally coexist peacefully
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Smaller snail option that provides cleanup services with minimal conflict
Also recommended alongside Ryukin Goldfish
Species whose own guides list Ryukin Goldfish as a tank mate.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.