Tips on buying seafood.

Fish is good. The fresh water kinds are yummy. Like salmon and halibut.

I've found the same thing - if you are going to cook the fish, then the supermarket is usually fine, but I have found out the hard way that if you are going to make sushi or sashimi you will want to purchase sushi grade fish. Some supermarkets have it, but you may have to go to a specialty food store. It's pricey, but don't be scared, for 1-2 people you only need like 1/2 pound if that.

Also, don't forget that you shouldn't by shellfish in any month without an R in the name (May, June, July and August). Simple to remember and you get better stuff that way.

I've also heard to never buy fish on a Wed because the fish markets are closed so you will be eating day old fish :)

I heard that from a friend from Japan, I'm not sure if it's true in the states or not but I thought I'd throw it out there!

Compared to the meat and poultry products , fish tends to decompose faster , and stale fish is just useless to eat . Frozen fish loses it's natural taste , so it's always better to buy fresh .
There are certain criterias to ascertain the freshness ,like the texture , redness of the gills , and eyes of the fish etc.
For prawns , the shells should not be separating from the meat , and crabs keep on breathing even if out of the water , and they should be alive .
It's advisable to buy fresh fish , in a proportionate quantity , clean , marinate , cook , and store in the fridge , for two or three meals , and just finish it off !
For keeping in the deep fridge , clean , wash , and store for a maximum of three days , not more .