The protein content of DR. BASSLEER BIOFISH FOOD REGULAR is extremely high. It gives fish all the vitamins, minerals, and trace elements they need. DR. BASSLEER BIOFISH FOOD significantly increases the color and activity of ornamental fish. Their fertility and growth are encouraged. Compared to the majority of traditional ornamental fish foods, DR. BASSLEER BIOFISH FOOD REGULAR is noticeably more nutrient-dense. Never give the fish more food than they can eat in a short period of time. The granulate sizes of DR. BASSLEER BIOFISH FOOD REGULAR are M, L, XL, XXL, and 3XL. All three water zones receive nutrients because the granulates in the smaller pellet size M sink gradually. This provides bottom feeders, middle-zone fish, and surface feeders.