Keeps 3 days refrigerated. Salmon is genuinely good cold — flake it into salads or grain bowls rather than reheating, which pushes it past done. If you do reheat, 275°F for 10 minutes, covered.
It flakes when you press the thickest part and turns from translucent to opaque. A thermometer is more reliable: 125–130°F for medium, 145°F if you prefer it fully firm.
Skin on, skin-side down. It protects the fillet from the hot pan and crisps up, and it lifts away easily afterwards if you don't want it.
Yes — thaw overnight in the fridge and pat it very dry, as frozen fish releases more water. Cooking from frozen works but adds about 5 minutes and won't brown.