Coins are the basic currency in FishVille. Coins are used to buy basic fish, plants, decorations and tanks from the store. Coins are mainly earned by selling fish, though can be gained through other means. Coins differ from in that they can be earned without having to pay real money. can only be obtained by paying real money to Zynga (aside from the 1 earned every/every other level); whereas coins can be earned many other ways.