Frozen Fish After Expiry Date Does Frozen Fish Food Have An Expiry Date? Is It Still Good After 3-4 Months?

Does frozen fish food have an expiry date? Is it still good after 3-4 months? - frozen fish after expiry date

I bought some frozen brine shrimp and bloodworms take some time. Are they still good after 3-4 months? And yes, have remained frozen at all times.