WormBitz is freeze dried marine polychaete worms. That may not sound exciting to you, but you can bet it is very exciting to fishes of all kinds, freshwater and saltwater. The nutritional value is fantastic- Wormbitz is high in protein and rich in Highly Unsaturated Fatty Acids, plus the aroma and flavor are irresistible! Finicky fishes can be enticed to eat with WormBitz. Banggai Cardinalfish, that normally only eat live or frozen shrimps or worms consume dried WormBitz right off the the aquarium surface. Marine Butterflyfish and Freshwater Discus likewise love WormBitz. The freeze-dried worms are soft AND brittle, which makes it easy to crumble them to make bits of any size, so it is suitable for all fishes, small and large.