Lake Wanaka's trout have been on a go-slow and playing hard to get, a fisheries survey of 211 anglers has revealed.
This summer, Otago Fish & Game officers will be monitoring the health of the lake fishery to work out why trout went off the bite and were in poorer condition during the 2021-22 fishing season.
Anglers spent an average of seven hours fishing for every fish caught on the lake last season and many were concerned for the fishery, Otago Fish & Game officer Ben Sowry said.
"Catch rates fluctuate from season to season, but we want to look closely at the health of this renowned fishery," he said.
Probable influences included the hot summer temperatures from January to March as fish moved deeper to cool waters.