WHAT DOES MOUNT GAMBIER BLUE LAKE MEAN?

Hello there, I might love to check out the Blue Lake. Coming in April 2017, but hubby wishes to know if there is any fishing close by (I believe you may’t fish from the lake) and what kind of fish may possibly he catch?I believe the top time to go to Mount Gambier is around Oct / November. This can be spring time plus the Solar will be warming it