Set your cannon bet
Before firing, you choose how much each shot costs. nuwstar typically lets you adjust bet size within the room's permitted range. A higher bet per shot increases the potential payout if you land a catch, but it also means each missed shot costs more.
Most new members are better served starting at the lowest available bet while learning where different fish types appear and how the cannon behaves. Cannon cost is deducted immediately each time you fire, regardless of whether the shot lands.