Buy Live Copepods and add biodiversity to your tank! Adding live copepods to any reef tank is extremely beneficial to marine reef aquariums and is a highly nutritious food source for all fish! Live Copepods are also an excellent addition to your clean up crew! Copepods feed on diatoms, detritus, and phytoplankton. Our most popular copepod is the Tigriopus copepods since they are the largest and move through the water column with a jerking motion that fish can’t resist!