Harm of round fish tank to fish

The light generated by the radian inside the circular fish tank is harmful to the eyes of goldfish, and even leads to blindness.

A round fish tank can't be equipped with a filter and an oxygen generator, which will lead to the death of fish due to lack of oxygen. Third, the scene seen in the round fish tank is distorted, and the fish will have visual distortion after watching it for a long time.

To be exact, a small round transparent fish tank is not suitable for raising fish. It is said that in some foreign countries, raising fish in round transparent fish tanks is an animal cruelty and has been prohibited by law; It is said that a big brand aquarium in France no longer sells round transparent fish tanks with a capacity of less than 15 liters for similar reasons. People think that this is an act of abusing fish, so raising fish will shorten the life of fish.