If smoked salmon imports are lower margin as you assert, then this decision from major shipping line, the French-owned CMA CGM won't be helpful. I assume other container (TEU) lines will also have or be increasing their rates:

(just in time for Christmas imports that compete with TGR):

PSS - Reefer Cargo from North Europe to Australia

Friday, August 13, 2021

In a continued effort to provide our customers with reliable and efficient services, CMA CGM Group wishes to inform of the following Peak Season Surcharge update:

This PSS will apply as follows:

• Origin: From North Europe, including French ports of Le Havre and Fos (excluding other Med Ports)
• Destination : To Australia
• Cargo: Reefer
• Amount: USD 750 per 20'RF | USD 1,500 per 40'RF & RH
• Date of application: September 9th, 2021 (date of loading in the origin ports) until further notice