Freeze Dried Plankton - for Tropicals, Marines, Cichlids, Turtles, Koi Aquatic Foods Freeze Dried Tropical Fish Foods. Please note: All product photos are not exact, product color and sizes may vary a little Ideal for All Tropical Fish, both Freshwater and Saltwater Fish Aquatic Foods Premium Freeze Dried Foods are sifted to remove most dust and particles All Freeze Dried is packed in a Bubble Pack or a Hard Box for safe shipping This Freeze Dried Plankton is small, with pieces, powdery and will float.