Koi have slightly different nutritional needs to other pond fish, and they also require extra colour enhancers in order to look their best. Tetra Pond Koi Sticks meet these requirements via their extensively researched and proven formulation They will provide koi and other pond fish with a complete, highly digestible diet, leading to maximum health, condition and colour. Contains Vitamins. Tetra Pond Koi Sticks Analysis- Protein 31.0% Oil 5.0% Fibre 2.0% Ash 7.0% Moisture 7.0% Vitamin A 28800iu/kg Vitamin D3 1800iu/kg Vitamin E 195mg/kg L-ascorbyl-2polyphosphate 137mg/kg