Will Overfeeding Kill Fish?

Unfortunately, overfeeding is not only detrimental to your fish, but also to the overall health and well-being of your aquarium. ... High ammonia and/or nitrite levels can stress and even kill your fish. This problem is even more severe in small aquariums where toxins can reach lethal levels quickly.

Can fish die from overfeeding?

For most types of fish, the right amount of food might seem like too little. ... However, overfeeding fish can be a serious problem that can cause fish becoming lethargic and sick, and even lead to death.

What do I do if I overfeed my fish?

In the event that you do overfeed, promptly remove the uneaten food using a siphon or net. If you do not remove the excess food, you risk affecting the chemistry of the aquarium water. Nitrite and ammonia levels can rise and the oxygen and pH can drop to life-threatening levels.