guppy is a common small ornamental fish. Its body is small, but its tail is not small, accounting for one third of the whole body. It is a tropical fish that is very suitable for beginners to raise. It does not require high water quality, and it is also a cold-resistant variety among tropical fish, so it is not easy to raise and die, and it is also very beautiful.

There are many kinds of lamp fish, such as lotus lanterns, traffic lights, Yimei Taoist, etc. These fish have different families and genera, but they are similar in size and rich in color, so they are collectively called lamp fish. Because they are not big, they can be raised in a square cylinder of 30 cm.

Baiyun Jinsi is also called Tangyu, which is a unique fish species in China. It has been extinct in the wild, but it is more artificially raised. Compared with many common small tropical fish, its biggest advantage is that it is not afraid of cold. Although it also lives in the south, it has good cold resistance and is not difficult to raise artificially.

Mini parrot is a kind of snapper, which is small in size, solid in skin and easy to raise, especially suitable for novices, and does not need too much space, and can be raised in a 30 cm square cylinder. It should be noted that it is best to prepare shelter for raising this kind of fish, because they are easy to fight, and there are shelter houses to avoid some fights.

Mandragon is a fish of the family Percidae, which is not big in size, but fierce. The biggest feature of the fish in this family is that they have suprambranchial apparatus, which is an auxiliary respiratory organ, which allows them to breathe on the water surface when the dissolved oxygen in the water is insufficient.