Aquariums, Vastu, and the Ancient Art of Keeping the Right Fish

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Mayur Dev|August 23, 2026

For thousands of years, fish have been associated with luck, prosperity, abundance, and positive energy across Indian, Chinese, Japanese, and Southeast Asian traditions. From the legendary Arowana and the traditional 8+1 goldfish combination to Flowerhorns, koi, guppies, and bettas, different fish have developed their own cultural symbolism.

But choosing an auspicious fish is only part of the story. Where you place your aquarium, how many fish you keep, and most importantly, how well you care for them can all play a role in creating a healthy and harmonious aquarium.

This guide explores the traditional beliefs surrounding lucky fish, the species considered auspicious for Indian homes, Vastu aquarium placement, and the practical side of keeping your fish healthy.

Why Are Fish Considered Symbols of Luck and Prosperity?

Why fish? Across different cultures, several recurring symbols help explain their association with prosperity and positive energy.

Movement Represents Life and Energy

In Feng Shui and Vastu traditions, stagnant energy is associated with negativity. Moving water and active fish represent movement, vitality, and the continuous flow of energy.

A clean, well-maintained aquarium with healthy, active fish is therefore traditionally viewed as an effective way to introduce positive energy into a home or workplace.

Water Represents Wealth

Water has long been associated with the flow of wealth and resources, particularly in Chinese traditions. An aquarium contains continuously moving water, making it a symbolic representation of prosperity flowing into and circulating through the home.

Fish Represent Abundance

Fish are closely associated with abundance in Chinese culture. The Chinese word for fish, yú (魚), sounds similar to the word for surplus or abundance. This linguistic connection has helped make fish such as goldfish and koi important symbols of prosperity throughout Chinese and Southeast Asian traditions.

Colours Have Symbolic Meanings

Colour also plays an important role in traditional fish symbolism:

• Gold: Wealth and prosperity

• Red: Good fortune and protection

• Black: Absorption of negative energy

For this reason, the colour combination of fish in an aquarium can be considered just as significant as the species themselves.

The Most Auspicious Fish for Indian Homes

Different fish are associated with different forms of luck and prosperity. Here are some of the most commonly recognised auspicious choices.

1. Arowana (Scleropages sp.)

The Arowana is among the most highly regarded fish in Asian prosperity traditions. Often called the "Dragon Fish," its elongated body, metallic scales, and distinctive barbels are traditionally considered reminiscent of the Chinese dragon—a powerful symbol of protection, strength, and good fortune.

Gold Arowana and Red Arowana are particularly prized. High-grade Red Arowana can command prices running into lakhs of rupees among collectors.

There is also a traditional belief that an Arowana can protect its owner from negative energy. In some traditions, if an Arowana dies, it is believed to have absorbed misfortune intended for its owner.

Practical note: Arowanas can grow to around 90 cm and require very large aquariums, typically 500 litres or more. They are predatory fish and should not be housed with smaller fish. Their size and care requirements make them better suited to experienced aquarists rather than beginners.

2. Goldfish (Carassius auratus)

Goldfish are among the most accessible and widely recognised auspicious aquarium fish.

In Feng Shui traditions, goldfish are commonly associated with prosperity. One particularly well-known combination is eight gold or orange goldfish and one black goldfish. The number eight is traditionally associated with prosperity, while the single black fish is believed to absorb negative energy entering the space.

Popular varieties include:

• Ryukin

• Oranda

• Ranchu

Their rounded bodies, flowing fins, and golden colours make them popular choices for decorative aquariums.

Vastu perspective: Goldfish are traditionally considered suitable for the north or east zones of a living room or office. The north is associated with career and wealth, while the east is connected with health and family.

3. Koi (Cyprinus rubrofuscus)

Koi are closely associated with perseverance, determination, strength, and prosperity.

In Japanese tradition, koi symbolism is linked to the famous story of a koi swimming upstream and eventually transforming into a dragon. In Chinese and Indian traditions, koi are also associated with prosperity, particularly when kept in outdoor ponds and garden water features.

Some highly prized varieties include:

• Kohaku: White with red markings

• Taisho Sanke: White with red and black markings

• Showa: Black with red and white markings

Because koi grow considerably larger than most aquarium fish, standard koi are generally more suitable for properly designed ponds than indoor aquariums.

4. Flowerhorn Cichlid

The Flowerhorn has developed a strong association with prosperity in Southeast Asian and Indian aquarium traditions.

Its distinctive nuchal hump, or forehead protrusion, is traditionally associated with auspicious imagery and is sometimes compared with the lucky features depicted in Chinese iconography.

Flowerhorns are also known for their vibrant red, pink, and gold colours. Some owners attach particular significance to markings on the fish that appear similar to Chinese characters, especially the character associated with prosperity, fú (福).

Flowerhorns with prominent humps and distinctive markings are therefore considered particularly valuable and auspicious by enthusiasts who follow these traditions.

5. Guppy (Poecilia reticulata)

Guppies offer a simpler and more accessible way to bring colourful, active fish into a home aquarium.

Their bright colours, constant movement, and prolific breeding have traditionally been associated with abundance and fertility. Since guppies can produce fry readily, a thriving guppy aquarium can also symbolically represent continuous growth and new life.

For hobbyists looking for a smaller, colourful aquarium without the requirements of larger species, guppies can be an appealing choice.

6. Betta Fish (Betta splendens)

Bettas are often associated with strength, beauty, courage, and personal power.

A single male betta in a well-maintained, planted aquarium can make an attractive display and is traditionally associated with focused energy, confidence, and personal achievement. This symbolism makes bettas particularly popular for personal offices, study spaces, and areas connected with career and individual goals.

The betta also has a deep cultural connection to Thailand, where the species originates, and has traditionally been associated with qualities such as courage and elegance.

Vastu Shastra: Where Should You Place an Aquarium?

According to Vastu traditions, aquarium placement can be just as important as the fish themselves.

Recommended Aquarium Directions

North:
Traditionally associated with career, wealth, and opportunities. It is often considered one of the preferred locations for an aquarium in a living room or office.

East:
Associated with health, family, and new beginnings. It is considered another suitable direction for an aquarium.

Northeast:
Associated with water and spiritual energy in Vastu traditions. An aquarium placed here is traditionally considered beneficial.

Areas Traditionally Recommended to Avoid

• South and southwest: Associated with the fire element, which is traditionally considered incompatible with water.

• Bedroom: Traditionally avoided because the movement and energy of the aquarium are believed to interfere with restful energy.

• Kitchen: Considered a fire zone and therefore generally avoided for aquarium placement.

How Many Fish Should You Keep?

Fish numbers also have symbolic significance in traditional Feng Shui and Vastu-inspired aquarium practices.

The 9-Fish Combination

The traditional combination of nine fish—eight gold or orange fish and one black fish—is one of the most commonly recommended arrangements for prosperity.

Other numbers traditionally considered auspicious include:

• 1

• 2

• 6

• 9

The number 4 is traditionally avoided in some Chinese cultural contexts because its pronunciation is associated with death.

The single black fish in a group of gold or orange fish is traditionally believed to absorb negative energy entering the home.

What Do Different Fish Colours Symbolise?

Colour is another important part of traditional aquarium symbolism.

• Gold and orange: Wealth and prosperity

• Red: Good fortune and protection

• Black: Absorption of negative energy

A combination of these colours is traditionally considered particularly powerful when creating an auspicious aquarium arrangement.

The Practical Side: A Lucky Fish Is a Healthy Fish

There is one principle that brings the traditional and practical sides of fishkeeping together: a healthy fish is a better symbol of positive energy than a sick or neglected one.

Across traditions that associate fish with luck and prosperity, a thriving aquarium is viewed much more positively than one containing unhealthy fish or poor water conditions.

That means the most auspicious aquarium should also be a well-maintained aquarium.

Clean water, healthy fish, active movement, effective biological filtration, and regular water changes are essential parts of responsible fishkeeping. In this sense, practical aquarium care and the traditional principles of Vastu and Feng Shui can point in the same direction.

Protect Your Aquarium During Water Changes

Using Sunken Garden Anti-Chlorine during every water change helps protect fish and beneficial bacteria from chlorine and heavy metals commonly present in treated tap water.

You can also use Sunken Garden Good Bacteria to support biological stability and maintain a healthy aquarium environment.

Choosing food according to your fish species is equally important:

• Life Aayu Neutral for community and goldfish tanks

• Life Aayu Flowerhorn Food for Flowerhorn aquariums

• Life Aayu Glow Fish Food for guppies and community fish where vibrant colouration is desired

A healthy aquarium supports both the practical responsibilities of fishkeeping and the symbolic purpose behind keeping auspicious fish.

Final Thoughts

Whether you follow Vastu, Feng Shui, cultural traditions, or simply enjoy the beauty of an aquarium, choosing the right fish should always go hand in hand with responsible fishkeeping.

Arowanas, goldfish, koi, Flowerhorns, guppies, and bettas each carry different cultural associations, but they all have one thing in common: their well-being should come first.

A clean aquarium, stable water conditions, proper filtration, suitable nutrition, and healthy fish create a thriving aquatic environment—and that is perhaps the most positive energy an aquarium can bring into your home.

👉 Shop Life Aayu Fish Food | Shop Sunken Garden Anti-Chlorine

Questions about setting up an auspicious aquarium for your home? Write to us at info@mayurdevaquascaper.com.