How much should I feed my fish? How much should I feed my fish? You should feed your fish only as much as they can eat in 5 minutes, and then remove anything that they have not eaten to avoid the tank becoming dirty or cloudy. Tagged: fishquestion Was this article helpful? Yes No Related Articles Fish Tank Temperature What size filter do I need for my fish tank? Fish Tank pH API Guide to Diagnosing and Treating Sick Fish How do I calculate the volume of my fish tank? Ocean Nutrition Fish Feeding Guide Still need help?If you can't find the answer you're looking forContact Us