Mitsubishi-owned Cermaq says recent runaway salmon prices cannot continue forever but trying to work out when the market will run out of steam is no easy task.

Prices have soared this year amid strong demand, reduced supply and sharply higher feed and labor costs, the result of a host of factors, including a global container shipping crisis and Russia's invasion of Ukraine.

Last week Norwegian salmon prices reached their highest levels since Norway began compiling price data in 2000.