Hikari Bio-Pure Large Silversides are an excellent treat for larger, predator type fish. Silversides are naturally high in omega-3 fatty acids and have an amazing taste your fish are sure to love. Bio-encapsulated with multi-vitamins, this amazing product provides maximum nutrition for fish. In addition, Large Silversides are sterilized in three steps, so they are free of harmful bacteria, parasites, and foul odors.