HABITAT: China, Japan
Compatible: Require a tank free of active or aggressive fishes, best tankmates are Goldfish, Plecos, and some scavenger Catfish.
Aquarium setup: 65-75°F; pH 6.5-7.5; dH 4-20
Size: 10″ (25 cm)
For detail information refer to:
Can you keep goldfish and tropical fish together?
Goldfish: Maximum Size and Lifespan
A black ranchu goldfish
A black ranchu goldfish from The 7th “Pramong Nomjai Thaituala” Thailand Tropical Fish Competition 2008. (Photo credit: Wikipedia)