What? The requirements for this are nothing like what is required for sterilization of a Mars rover. NASA's goal is to not have a single iota of foreign organic material on rovers, which is obviously not even close to what is required here. The only thing you need to worry about with this stuff is whether there are any dangerous bacterium in it (e.g. salmonella), which can be readily monitored and avoided without herculean effort. And unlike real salmon, parasites and viruses won't have much opportunity to gain a foothold.