64oz of freshwater copepods, roughly 15,000 to 25,000 organisms. Sized for serious fry conditioning and small scale aquaculture. All freshwater, cultured in house in Vermilion, Ohio and bottled fresh the morning it ships. Orders go out Monday through Wednesday only so nothing sits with a carrier over the weekend. 100% live arrival guarantee, if anything shows up DOA I reship it free, no photos or claim forms needed.