The Purple Ranchu is a bonus species of fish in Happy Aquarium.The only way to earn it is downloading the
Purple Ranchu
Crowd Star Toolbar in your computer and later enter in your Happy Aquarium.So,the Ranchu is added to your tank.

In Real LifeEdit

200px-Goldfish Ranchu 2
The ranchu is a hooded variety of fancy goldfish developed in Japan It is referred to as the "king of goldfish" by the Japanese.
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