There are many varieties of goldfish, of which the most common and best to raise the number of grass gold. It is a eurythermal fish, which can survive in water temperature of 0-39 C, so it is not necessary to control the temperature specially. At the same time, its adaptability to water quality is also very strong, as long as the dissolved oxygen is not very low, basically can not die.
Koi carp is a fish of the genus Cyprinidae, which is very close to edible carp, so its characteristics are basically the same. As an omnivorous fish, it is mild in nature, likes to swim in groups, has strong adaptability to water temperature, and is very easy to raise. However, due to the large size, there are certain requirements for the size of the fish tank.
guppy is a common small tropical fish, but also very recommended for novice breeding of tropical fish. It is not big, many varieties, colors are also different, looks very beautiful. It is highly adaptable, can survive in dirty water, and can be mixed with other small tropical fish.
Tropical fish not only have guppy this small species, but also have a larger arowana, generally common are silver dragon, golden dragon, red dragon and so on. The body length of this fish is about 40-50 centimeters, up to 90 centimeters, and its life span is decades. It has a fierce temperament and mainly feeds on meat, so it is difficult to raise.
