What fish can live with Ranchu Goldfish?

Ranchu Goldfish pairs well with Zebra Danio, Rosy Barb, Gold Barb, Pearl Danio, Hillstream Loach, Peppered Corydoras. Compatibility depends on tank size, water parameters, and stocking density; the full list on this page ranks every checked pairing.

Species Profile

Ranchu Goldfish

Carassius auratus var. ranchu

Also known as: Buffalo-Head Goldfish, King of Goldfish

Goldfishpeaceful

Adult size

7″

Minimum tank

30 gal

Temperature

65–75°F

6.5–8

Schooling

Solitary OK

Water level

mid

Grows from juvenile

Typically sold at ~1.5″ and reaches 7″ over ~2 years. Plan tank size for the adult, not the fish at purchase.

Diet

Sinking pellets, blanched veggies, frozen

Notes

Eggcup-bodied fancy with no dorsal fin, often called the king of goldfish in Japan. Very slow swimmer; flake floats and stresses them. Feed sinking pellets only. Pair only with similarly-slow fancies.

Compatible Tankmates

Best tank mates for Ranchu Goldfish

Every species below passes the compatibility engine when paired with Ranchu Goldfishin a suitably sized tank. Verdicts come from the same rules the builder uses — click a card to see that species' own care profile and its tank mates in turn.