Frozen Shrimp Frozen Shrimp Stock. How Long Does It Last?

Frozen shrimp stock. how long does it last? - frozen shrimp

When my family and I eat shrimp. I always take deposits and also a reserve of Nice. Problem is that I most frequently use the shrimp population. The result is a shrimp stocks heavily shit. My question is, how long can be frozen? I had some for almost a year now, hahahaha. in guessing thats not the best to use what?