Nishikoi staple is an ideal maintenance diet for koi and pondfish containing the right levels of protein for healthy growthr the protein is highly digestible which allows your fish to utilise it more efficiently helping to keep waste to a minimum and your pond water cleanerr the high stabilised vitamin c content helps to maintain fish health preserviing their vigour and vitalityr when to feed r nishikoi staple should be fed to all koi and pond fish when pond temperatures are above 8c 46