The main mistakes of aquarists can significantly affect the health of fish and the general condition of the aquarium. Overfeeding fish Feeding fish is a crucial aspect of their care in an aquarium. However, many aquarists face the problem of overfeeding. Aquarium owners often believe that fish always require extra food, leading them to provide more than necessary. Excessive feeding can cause issues in the aquarium. Uneaten food settles at the bottom, accumulating harmful substances such as ammonia, nitrite, and nitrate. This, in turn, overloads the biological filter and can negatively affect t…