3F Artemia Flat Pack are frozen as one individual 500g or 1000g pack. Brine shrimp is a common food source for fish. It is a source of protein, carotene and functions as a natural laxative in fish digestive systems. Their small size, great taste, and limited mobility make them an ideal prey for most aquarium-sized fishes and they are excellent for colouration and health. Adult brine shrimp are suitable for small to large freshwater- and marine fishes. 3F Frozen Artemia are caught in the wild and selected on size and purity to stimulate the appetite of your fish and not contaminate the water. Its suitable for both Marine and Freshwater fish. Premium frozen fish food manufactured in the Netherlands.