What is the minimum balance in Juno?

Could you please clarify what you mean by "Juno"? Is it a specific cryptocurrency, a blockchain platform, or a financial service provider? If we're talking about a cryptocurrency or a blockchain-based account, the minimum balance can vary depending on the platform's policies. Some may require a certain amount to maintain an account active, while others may have no such requirements. Could you provide more context or specify which Juno you're referring to so I can give a more accurate answer?