Whether the tank size is suitable depends on the body length of the fish. Fish in different periods have different requirements for the fish tank, but we must ensure that there is enough space for activities. In the young fish period, the fish does not need too big fish tank. Because the fish is relatively small, the fish tank with a length of 100 cm is generally enough. As they grow up, the 100cm tank will not be able to meet their needs for space. The body length of adult goldfish is between 50 and 60 cm, so the length of the fish tank should be at least 150 cm. Only when the length of the fish tank reaches three times the body length of the fish will it not affect the growth of the fish. The width and height of the fish tank are relatively fixed, and the general width and height are 60 cm. Therefore, the fish tank with the size of 150 * 60 * 60cm or 180 * 60 * 60cm should be used for breeding goldfish. This kind of fish tank can not only ensure that the fish can move freely, but also has beautiful appearance.
The length of the goldfish tank cannot be less than 150cm, the width cannot be less than 60cm, and the height cannot be higher than 80cm. When only one goldfish is raised, at least a fish tank with a specification of 150 * 60 * 60cm should be selected. If more than one fish is mixed, the size of the fish tank should be determined according to the breeding density, fish species and fish length. However, the width and height of the fish tank are basically fixed, both of which are 60 cm. The length of the fish tank should be determined according to many factors mentioned above.