Commercial pond-fish foods are sold in pellet, stick and flake forms, formulated for different dietary goals — growth, colour enhancement, or cool-water digestion (wheat-germ-based). This category lists current Amazon listings for koi and goldfish food. Product listings reproduce manufacturer claims about nutritional profile and intended use; dietary suitability depends on specific fish, water temperature and local conditions.
Food formulations marketed as colour-enhancing, growth, staple or wheat-germ each target different conditions. Manufacturer packaging typically specifies intended water temperature range.