How to keep small goldfish alive?

Keeping small goldfish alive requires attention to the following points. First, choose a tank of appropriate size based on the number and size of the goldfish, ensuring they have enough space to swim. Second, goldfish prefer slightly alkaline water with a pH between 7.5 and 8.0 and a temperature range of 18 to 25 C. When keeping them, watch for water quality changes and replace part of the water every 3 to 7 days.

Finally, feed the goldfish on a regular schedule and in controlled amounts, one to two times a day, each time making sure they finish within a few minutes. Since goldfish do not regulate their own hunger, be careful never to overfeed them.