"One of the main challenges is that bad fish smells like fish! However, when a fish starts to sour, the smell becomes much more potent and morphs into an off-putting odor."
"The sell-by date is the cutoff for when the grocery store needs to sell the fish. The expiration date is how long you have to eat it."
"Good fish have a fishy smell that’s lighter and more pleasant. Bad fish on the other hand, will smell like something that has been sitting on the beach roasting in the sun all day."
"Another way to tell whether your fish is fresh and ready to eat is if it still has its original color. Fish tend to change into blander colors the longer they are left out."