利用可能額(Available Amount) ＝ Available amount of crypto assets or Japanese Yen.
"Balance minus pending orders or pending withdrawals"
残高(Balance) ＝ Amount of each crypto assets you hold or the amount of Japanese yen you hold.
総資産(Total Valuation) ＝ Total amount of all crypto assets you hold converted into Japanese yen + Japanese yen amount you hold.
The total asset will change with the price of the crypto asset.
In case you have unexcuted orders or withdrawal requests, the amount of them will be locked.
The amount subtracted from the locked amount will be displayed as your "利用可能残高".
If you attempt to order more than the amount shown on your 利用可能残高, the message "注文可能数量を超えています（You have exceeded your available balance）" will appear in red letters.
In bitbank.cc, the amount of assets is shown after the decimal point.
[Minimum unit display for each assers]
Japanese Yen (JPY): 0.0001JPY
Bitcoin (BTC): 0.00000001 BTC
Litecoin (LTC): 0.00000001LTC
Ripple (XRP): 0.000001XRP
Ethereum (ETH): 0.00000001 ETH
Mona Coin (MONA): 0.00000001MONA
Bitcoin Cash (BCC): 0.00000001BCC
Please be careful not to read the decimal point and comma incorrectly.