Tasty zooplankton nutrition for filter-feeders and small fish! Frozen Freshwater Cyclops, Cyclops sp., are the perfect tiny diet for filter feeding invertebrates, soft corals, hard corals (sps), and freshwater or marine juvenile fish. The size range of this food item is 200 to 400 microns - a superior replacement for Artemia nauplii. INGREDIENTS: Fresh Frozen Cyclops, Cyclops sp., drained of excess water, Potassium ascorbate. (source of Stabilized vitamin C).