Cambodian Betta Fish


Betta fish are one of the most popular aquarium fish, known for their vibrant colors and flowing fins. Among the different varieties of Betta fish, Cambodian Betta fish are particularly sought after for their unique coloration and beauty. In this guide, we will explore the physical characteristics, breeding techniques, housing requirements, and health considerations for Cambodian Betta fish.

Key Information: Cambodian Betta Fish

Topic Information
Lifespan 2-4 years
Temperature 78-82°F
Min size 2.5 gallons
Max size 3 inches
Species Betta splendens
Family Osphronemidae
Scientific Name Betta splendens
Origin Southeast Asia
Diet & Nutrition Carnivorous; pellets, frozen or live food
Breeding Bubble nest builder; male tends the eggs
Tank mates Non-aggressive fish; avoid fin nippers
Tank size 5 gallons or larger for community tank
Average price $5-$20

Note: The information provided is based on general care guidelines for Cambodian Betta Fish and may vary based on individual circumstances. It is important to research and consult with a veterinarian or aquatic specialist for specific care instructions for your fish.

Explanation of Cambodian Betta Fish

Cambodian Betta fish, also known as “Krongthong” in Thailand, are a color variety of the Betta fish species, scientifically known as Betta splendens. Cambodian Betta fish are characterized by their solid coloration, which ranges from pale pink to deep red, and their contrasting light-colored fins. The bright color of Cambodian Betta fish is due to their genetic makeup and selective breeding.

Importance of Cambodian Betta Fish in the aquarium hobby

Cambodian Betta fish are popular among fishkeepers for their unique coloration and beauty. They are also popular due to their ease of care, making them an excellent choice for beginners in the aquarium hobby. Additionally, breeding Cambodian Betta fish has become a popular hobby in itself, as breeders strive to produce new color combinations and patterns.

Physical Characteristics of Cambodian Betta Fish


Cambodian Betta fish have a solid body color that ranges from pale pink to deep red. Their fins are light in color, usually white or light blue. The fins of a Cambodian Betta fish may also have a slight iridescence or a metallic sheen, which adds to their beauty.

Fin shapes

Like all Betta fish, Cambodian Betta fish have long flowing fins. The shape of the fins varies among individuals, but generally, the dorsal fin is long and pointed, the anal fin is shorter and rounded, and the caudal fin, or tail fin, is large and fan-shaped.

Size Cambodian

Betta fish are relatively small, usually growing to a maximum size of around 2.5 inches (6.5 cm) in length. Male Cambodian Betta fish are typically larger than females.

Habitat and water parameters

Cambodian Betta fish are native to Thailand, Cambodia, and Vietnam, where they live in shallow, slow-moving waters such as rice paddies and streams. In captivity, Cambodian Betta fish require a tank with a capacity of at least 5 gallons (19 liters). The water temperature should be between 75-82°F (24-28°C), and the pH should be around 6.5-7.5. Cambodian Betta fish prefer water that is soft to moderately hard.

Breeding Cambodian Betta Fish

Selecting breeding pairs

Before breeding Cambodian Betta fish, selecting healthy and genetically diverse breeding pairs is essential. Choose male and female fish that have good body shape, coloration, and finnage. Breeding pairs should be at least 4-6 months old and in good health.

Conditioning and preparing the fish for breeding

Before breeding, Cambodian Betta fish must be conditioned with a high-quality diet of live or frozen food. Conditioning usually takes around 2-4 weeks, during which time the male and female fish should be separated. When the female is ready to breed, her belly will become noticeably swollen with eggs.

Breeding process and techniques

Breeding Cambodian Betta fish involves introducing the male and female fish into a breeding tank with a divider. Once the female is ready, the divider can be removed, and the male will begin to court the female by displaying his vibrant colors and flaring his fins. The female will respond by swimming near the male, and the male will wrap his body around the female, releasing his milt to fertilize the eggs.

After spawning, the female should be removed from the breeding tank, as the male may become aggressive towards her. The eggs will hatch in around 24-48 hours, and the fry will become free-swimming in around 3-4 days. The fry should be fed small amounts of freshly hatched brine shrimp or a high-quality liquid fry food.

Raising and caring for the fry

Raising Cambodian Betta fish fry requires careful attention to their environment and feeding. The fry should be kept in a separate tank with a heater and a sponge filter. The water temperature should be around 80°F (26°C), and the pH should be around 7.0. The fry should be fed small amounts of food several times a day, and regular water changes should be performed to keep the water clean.

Housing Cambodian Betta Fish

Tank size and setup

Cambodian Betta fish require a minimum tank size of 5 gallons (19 liters). The tank should be planted with live or silk plants, and provide plenty of hiding places and areas for the fish to explore. A heater and a filter should be installed to maintain a stable and clean environment.

Water parameters and maintenance

The water temperature should be between 75-82°F (24-28°C), and the pH should be around 6.5-7.5. The water should be changed at least once a week, and a water conditioner should be used to remove chlorine and other harmful chemicals.

Tankmates and compatibility

Cambodian Betta fish are relatively peaceful but should be housed alone or with other non-aggressive fish. It is not recommended to house multiple male Betta fish in the same tank, as they may become aggressive towards each other.

Providing proper nutrition and feeding

Cambodian Betta fish should be fed a high-quality diet of live or frozen food, such as bloodworms, brine shrimp, or daphnia. Pellets and flakes can also be provided, but live or frozen food should be the primary diet.

Health and Common Diseases

Common health issues

Cambodian Betta fish are susceptible to several health issues, including fungal infections, fin rot, and Ich. These conditions can be caused by poor water quality, improper diet, or stress.

Preventative care

Maintaining a stable and clean environment is essential for preventing health issues in Cambodian Betta fish. Providing a balanced and varied diet, and avoiding overcrowding and aggression in the tank can also help prevent health issues.

Treatment options

Treatment for health issues in Cambodian Betta fish may involve medication or changes in the environment, such as water changes or temperature adjustments. Consult with a veterinarian or fish expert for advice on specific treatment options.

Signs of a healthy fish

A healthy Cambodian Betta fish will have clear eyes, smooth fins, and active behavior. They will also have good appetites and show vibrant colors.

Can you keep multiple male Cambodian Betta fish in the same tank?

Keeping multiple male Cambodian Betta fish in the same tank is not recommended, as they are highly territorial and aggressive towards each other. Males will often fight to establish dominance and can cause serious injury or death to each other. However, it may be possible to keep multiple male Cambodian Betta fish together in a large, heavily planted tank with plenty of hiding spots and territory dividers.

This is known as a sorority tank and is only recommended for experienced fish keepers. Even in this case, it is important to closely monitor the fish and separate them immediately if any aggression is observed. It is generally safer to keep male Cambodian Betta fish alone or with compatible tankmates such as peaceful bottom dwellers or small schooling fish.

How can you reduce stress in Cambodian Betta fish?

Reducing stress is essential for the health and well-being of Cambodian Betta fish. To minimize stress, it is important to provide them with a comfortable and stable environment. Keeping the water clean and maintaining appropriate temperature and pH levels is crucial. Frequent water changes and adequate filtration can help keep the water clean and reduce stress.

Additionally, providing hiding spots and plants can help create a sense of security for your fish. Avoid sudden movements or loud noises around the tank, as these can startle and stress your fish. Overfeeding or underfeeding can also cause stress, so following a regular feeding schedule and providing a balanced diet is important. Lastly, avoid overcrowding the tank and choose compatible tankmates to reduce aggression and stress in your Cambodian Betta fish.

How can you tell if a Cambodian Betta fish is healthy?

Observing your Cambodian Betta fish regularly is important to ensure their overall health and well-being. A healthy Cambodian Betta fish will have clear, bright, and smooth scales with no discoloration or lesions. The fins should be intact, full, and not clamped or torn. A healthy fish will swim actively and confidently around the tank, without any signs of lethargy or abnormal behavior.

The eyes should be clear and free from cloudiness or swelling. The gills should also be healthy, with no signs of labored breathing or excessive mucus production. A healthy Cambodian Betta fish will have a good appetite and eagerly eat their food. Any unusual behavior or changes in appearance can be a sign of illness, stress, or disease, so it is important to act quickly and consult with an aquatic specialist or veterinarian for proper treatment.


In conclusion, Cambodian Betta fish are a unique and beautiful variety of Betta fish that can make a great addition to any aquarium. Proper care and breeding techniques can help ensure their health and longevity. Following this guide’s guidelines, fishkeepers can enjoy the beauty and wonder of Cambodian Betta fish.



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