After consulting the fish culture network, the mother fish after giving birth to small fish should be kept separately for about 5 days before being put back into the original tank to avoid getting sick, and the small fish should be kept separately before being put back 1 month.
Lucky fish, also known as crane crown red goldfish, belongs to tropical fish. The red sarcoma on the head is raised high, square or round, like the red crown of a crane, and limited to the top, hence the name crane crown red.