Frozen aquatic food is often used as frozen fish food and these handy blister packs which are stored in the freezer can last a long time.
I ordered Gamma Frozen Mini Bloodworm from Internet Reptile as I couldn't get it locally. The ordering process was easy and the product good value. Delivery was fast by courier and came well packaged in an insulated box with dry ice frozen packs keeping the food in perfect condition. I have previously purchased this product and will do again.
10 packs of Gamma bloodworm exactly as ordered arrived in excellent condition still well frozen packed with dry ice. They would not have been better presented if they had just been lifted from the freezer.