mmmmm.... salmon!
I have been a lifelong fan of salmon, growing up in Washington state. We always tried the best we could to duplicate the alder-smoked salmon from Ivar's fishhouse on the sound.
I have always known that NOT OVER COOKING salmon is key. And that this is hard to do since it goes from under done to dried out in about 1 minute. It is sad that many, many people have NEVER had any properly prepared salmon. So this year, I learned something new. The 1st lesson is that almost all "sources" of the correct doneness internal temperature for fish/salmon is 145 deg. Based on FDA input I assume, likely because all potential pathogens will be instantly killed at 145 deg. What they DON"T tell you is that any/all pathogens will also be killed, just as dead, at an internal temperature of maybe 120 deg after 1-2 minutes.
I went looking for "alternate" sources of doneness temperature data, and found this -
Ideal Doneness Temperature for Wild Salmon | Cook's Illustrated
from the trusted "Cooks Illustrated" site, where they actually repeatedly TEST recipes until they find perfection. So the second lesson is NOT 145, but either 120 or 125 depending on your salmon species. I use an inexpensive barbecue thermometer with a stainless probe and cable. Leave it in the whole time in the thickest part. Take the salmon off the heat just as it passes 5 deg under your target. Tent loosely with foil for at least that 1-2 minutes to make sure any potential pathogens are finished off.
And at an internal temperature of 120 to 125 deg, the meat is delectable! Silky and tender, just like salmon SHOULD be. When the meat is like this, it is fabulous regardless of whether it is smoked, barbecued, pan-fried, or broiled. We generally marinade at room temperature for a few hours in a soy/ginger/lemon concoction and grill on the gas grill or smoker.