Everytime I touch that track it turns into gold (Yes it turns to gold). Everybody knows I've got the magic in me (I got the magic, baby). When I hit the flow the girls come snappin' at me (They be snappin' baby).
When you buy a whole fish, less of the area that you're planning to eat is exposed to oxygen. This means it will keep a little longer. They estimate a whole fish will last a maximum of three days, while fillets will last closer to two days. Certain fish will dry out faster than others, the folks at The Lobster Place say, and some will change color slightly as they age.
Preferably, the day you buy it from your local fishmonger or grocery store. But sometimes that's not possible. When stored properly in the refrigerator, fresh fish should be cooked within two days, up to three at most, from the time it was purchased. Shelf life does vary from species to species, with some lasting slightly longer. Two days is a good rule of thumb to follow.