How Many Goldfish Should You Keep for Good Luck and Wealth?

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September 16, 2025

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Many beginners in fishkeeping have heard the saying: “Keep goldfish in odd numbers, not even numbers.” Yet, most people do not know the meaning behind this belief. Here, we will explain the reasons in detail.

Why Odd Numbers Are Preferred

When we talk about “keeping fish in odd numbers,” it usually refers to large, adult goldfish. In general, a goldfish needs to reach at least 10 cm in body length to be considered large. Juvenile fish, such as fry or young goldfish that have just changed color, are not included.

The idea of “odd numbers over even numbers” comes from Feng Shui. In traditional Chinese culture, harmony between yin and yang is very important. According to the I Ching (Book of Changes), fire represents yang and water represents yin. Odd numbers are considered yang, while even numbers are yin. Keeping fish in odd numbers symbolizes balance between yin and yang. This balance is believed to bring good fortune and harmony to the household.

The Five Elements and Goldfish Numbers

From the perspective of the Five Elements (Wu Xing), odd numbers also represent yang, symbolizing strong positive energy. This suggests that goldfish kept in odd numbers are easier to raise and tend to grow better.

In Feng Shui numerology, numbers have symbolic meanings:

  • 1 and 6 represent water.
  • 2 and 7 represent fire.
  • 3 and 8 represent wood.
  • 4 and 9 represent metal.
  • 5 and 10 represent earth.

Because of this, families often choose to keep 1, 4, 6, or 9 goldfish. These numbers form a combination of metal and water, which is believed to attract wealth. Therefore, even numbers like 4 and 6 are also considered acceptable.

Lucky Numbers in Zi Wei Astrology

According to Zi Wei Dou Shu (Purple Star Astrology), people often prefer to keep 1, 3, 5, 7, 9, 17, or 19 goldfish. Among these, 19 is the most auspicious number. It represents good luck, success, completeness, and the idea of “nine returns to one,” which implies stability and perfection.

Feng Shui Interpretations of Fish Numbers

Feng Shui also gives specific meanings to different numbers of goldfish:

  • 1 goldfish – Linked to the Tan Lang star. It enhances romance and relationships, especially for singles.
  • 2 goldfish – Linked to the Ju Men star. This number is associated with illness, suggesting possible health issues in the family. However, it can benefit those in the medical field.
  • 3 goldfish – Linked to the Lu Cun star. It may attract disputes or legal issues, but it benefits people working in law.
  • 4 goldfish – Linked to the Wen Qu star. It symbolizes wisdom, intelligence, and career success. It is especially beneficial for students, scholars, and politicians.
  • 5 goldfish – Linked to the Lian Zhen star. It may bring obstacles or challenges to the household.
  • 6 goldfish – Linked to the Wu Qu star. It benefits government officials and military personnel, symbolizing career stability and growth.
  • 7 goldfish – Linked to the Po Jun star. Considered unlucky, it suggests risks of theft or loss of valuables.
  • 8 goldfish – Linked to the Zuo Fu star. It strongly attracts wealth, especially for people in the real estate industry.
  • 9 goldfish – Linked to the You Bi star. It symbolizes family harmony, smooth fortune, and abundant wealth.

Final Thoughts

These interpretations come mainly from Feng Shui traditions. In reality, there is no strict rule that goldfish must be kept in odd or even numbers. The best choice depends on your personal preference and what makes you feel happy. After all, keeping goldfish is not only about attracting wealth but also about bringing peace of mind.

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