New Zealand King Salmon says the "extraordinarily hot summer" has cut survival rates at its fish farms in the Marlborough Sounds and it expects weaker second-half earnings after profit in the first half soared 81 per cent.
Profit rose to $15.7 million in the six months ended December 31 from $8.7m a year earlier, the company said in a statement. Sales climbed to $87.7m from $63.6m.
Chair John Ryder said King Salmon remains "positive about the longer-term prospects for our company" having experienced strong demand for its fish in the first half. It would give an update on the impact of the hot summer once it had done a full assessment.
"Favourable growing conditions during the FY2017 year allowed us to deliver additional volume to satisfy the demand," he said.
"However, the situation has now become more challenging. The extraordinarily hot summer has impacted the survival rates of our King Salmon, and this will be a principal factor behind an anticipated reduction in profits for the second half."