I think this effect Huon more than TGR.
95% of TGR's sales are from domestic, TGR can increase it's retail price to offset this higher cost.
Huon has more export business, which mean it has to compete with big international salmon farmers, such as: Marine Harvest, Camanchaca (Chilli), Blumar (Chilli), Austevoll (Norway), Grieg (Norway).