Fish food pellets - how long are they good after opening the jar?

[Sunee]

Okay, you obviously have many more fish than I do. I only have two clowns and the smallest container I could buy of NLS (I think 3 oz) and have had it open 6 months or more. As it isn't the only thing I feed it is still 1/2 full. They are starting to spit it out so I think I will get a new container and see how they like it. I never thought of freezing it so I will give that a try. Thanks for the tip!!!