This product belongs to the "sera Nature" product range, which does not require any dyes nor preservatives. A varied diet with ingredients close to nature is the best protection against deficiencies, and supports the health and liveliness of the fish. The Nature food types therefore contain natural ingredients such as Spirulina, Krill or sustainable insect meal from soldier fly larvae (Hermetia). The signets on the front side of the package highlight these ingredients and their amounts in the food.