ppy Guppy is a common small tropical fish. Its biggest characteristic is that its tail is like spreading its tail. It is very colorful and beautiful. The fish's body length is only 3-4 centimeters, the consumption of oxygen is not large, as long as the filter is always open, there is no need to oxygenate it.
fish Mary fish, like guppies, is also a small fish belonging to the family Poeciliidae. It can not only survive in waters with low dissolved oxygen, but also has a strong ability to resist pollution. Even in an environment with poor water quality, it can be kept alive. This kind of fish mostly feeds on algae and can also eat organic debris.
Betta is a fish of the family Percovidae. This kind of fish has the characteristics of hypoxia tolerance. When the dissolved oxygen in the water is insufficient, it often swims to the surface of the water and breathes there. Therefore, there is no high requirement for the oxygen content of the water body. However, its fighting nature is very strong, so it can not be mixed, only one.
Brontosaurus is a fish of the snakehead family, the most famous of which is the snakehead. Its characteristic is that it does not require high dissolved oxygen, so it often does not need oxygen equipment to raise brontosaurus. As a carnivorous fish, it receives a limited variety of food, mostly fed with fish, shrimp, red worms, mealworms and so on.
