Dried River Shrimp are a great high protein treat for all medium & large koi €šÂ River Shrimp is a great food for Koi as well as pond and large aquarium fish, Turtles, terrapins ,amphibians, reptiles & birds. They are very high in protein so they are an excellent source of energy Composition River Shrimp Analytical Constituents Crude Protein 60% Crude Fats & Oils 11% Crude Fibre 4% Crude Ash 10%