BIO-PUREÂ® FD is the world's cleanest freeze-dried fish food available today. Pharmaceutical freeze-drying techniques allow us to give you a product as close to fresh as humanly possible. Expect a texture and taste not previously available in a freeze-dried food. If you're looking for an excellent daily diet or treat for any type of freshwater or marine aquarium inhabitant, look no further. BIO-PUREÂ® FD Spirulina Brine Shrimp, an excellent choice from the quality leader, Hikari!