Best Seller | San Francisco Bay Frozen Reef Plankton, 3.5 oz. Frozen Reef Plankton- Scientific name: Calanus finmarchicusExcellent for Reef Tanks. Reef Plankton feeds fish, corals, and invertebrates simultaneously in your reef aquarium. They stimulate appetite and are eagerly eaten by finicky marine fish, such as... ... more San Francisco Bay Frozen Reef Plankton, 3.5 oz. Frozen Reef Plankton- Scientific name: Calanus finmarchicusExcellent for Reef Tanks. Reef Plankton feeds fish, corals, and invertebrates simultaneously in your reef aquarium. They stimulate appetite and are eagerly eaten by finicky marine fish, such as... Petco.com | | $9.99 go to store |