This new range from Nishikoi contains naturally high levels of protein nutrients & minerals that fish thrive on. They all come packaged in clear jars that are foil sealed for freshness. Natural Range Silk Worm Pupae Treats are a natural way of producing high growth rates in Koi & pond fish. Silkworm pupae are high in protein & other natural oils that fish benefit from. They should be used as a treat only & should be fed to fish as part of a varied diet. Natural Range Mixed Shrimp Treats is a blend of shrimps & is an ideal supplement to feed fish. It can also be fed to turtles & terrapins. They should be used as a treat only & should be fed to fish as part of a varied diet. Natural Range Mixed Shrimp & Mealworm Mix contains dried mealworms shrimp 2 types of stick & 2 types of pellet. It is suitable for all pond fish & Koi. This is a complete meal mix & can be used throughout the year.