6 X Cardinal Tetras – Paracheirodon Axelrodi – South American Tetras (6)
Original price was: £11.49.£9.68Current price is: £9.68.
Welcome these beautiful 6 Cardinal Tetras (Paracheirodon Axelrodi) into your aquarium! Their vibrant colors and graceful movements make them stunning community members. Perfect for beginners seeking elegant tropical fish to enhance their aquatic environment.
In stock
Species Introduction
The Cardinal Tetra, scientifically known as Paracheirodon axelrodi, is a captivating freshwater fish that hails from the lush waters of South America, particularly the Rio Orinoco and Rio Negro basins. These beautiful creatures are renowned for their vibrant coloration, which features a striking blue body adorned with a vivid red stripe that extends from the middle of their bodies to the base of their caudal fin. Cardinal Tetras typically reach a maximum length of about 4 cm (1.5 inches), making them an ideal choice for aquarists looking to create a colorful and lively community tank. Their peaceful nature and schooling behavior make them a favorite among both beginners and experienced fish keepers alike.
Care Requirements Dashboard
| Optimal Living Conditions | |
|---|---|
| Water Temperature | 24-27°C (75-81°F) |
| pH Level | 6.5-7.5 |
| Water Hardness | 4-12 dKH |
| Minimum Tank Size | 80L (20 gal) |
| Salinity | Freshwater |
| Care Level | Beginner Friendly |
✓ Care Level: Easy
Tank Size: Minimum 10 gallons
Water Temperature: 22-28°C (72-82°F)
pH Level: 5.5-7.0
Hardness: 1-10 dGH
Natural Behavior & Temperament
Cardinal Tetras are known for their peaceful and social behavior. They thrive in groups, and it is recommended to welcome these beautiful creatures in schools of at least six individuals to ensure their well-being and to observe their natural shoaling behavior. In a community tank, they exhibit a calm demeanor, often swimming in the mid to upper levels of the aquarium. Their vibrant colors become even more pronounced when they are kept in a well-planted tank with soft lighting, mimicking their natural habitat. They are non-aggressive and can coexist with a variety of other peaceful fish species, making them ideal companions in a community aquarium.
Tank Setup Guide
Creating an ideal environment for your Cardinal Tetras involves replicating their natural habitat as closely as possible. A well-planted aquarium with plenty of hiding spots is essential. Use fine-grained substrate to mimic the soft riverbeds they inhabit in the wild. Incorporate live plants, driftwood, and rocks to create a natural landscape that provides shelter and reduces stress. The lighting should be subdued, as bright lights can make these fish feel exposed. Floating plants can also help diffuse light and create a more comfortable environment. Ensure that the tank has good water circulation but avoid strong currents, as Cardinal Tetras prefer gentle water movement.
Water Quality Management
✓ Good Water Quality is Essential
Maintaining optimal water quality is crucial for the health of your Cardinal Tetras. The ideal pH level for these fish is between 5.5 and 7.0, with a temperature range of 22-28°C (72-82°F). Regular water testing is recommended to monitor these parameters, as fluctuations can lead to stress and health issues. Additionally, perform regular water changes of 20-30% weekly to keep the water clean and free of toxins. Use a high-quality filtration system to ensure proper water circulation and clarity, and consider using a heater to maintain a stable temperature.
Feeding & Nutrition
Cardinal Tetras are omnivorous and thrive on a varied diet. A balanced diet should include high-quality flake food, micro-pellets, and occasional live or frozen foods such as brine shrimp, daphnia, and bloodworms. Feed them small amounts two to three times a day, ensuring that they can consume the food within a few minutes to prevent water quality issues. It is important to avoid overfeeding, as uneaten food can lead to poor water quality and health problems. Providing a diverse diet will enhance their coloration and overall vitality.
Compatibility Guide
✓ Ideal Tank Mates
Cardinal Tetras are peaceful fish that can coexist with a variety of other species. Suitable tank mates include other small, non-aggressive species such as Neon Tetras, Guppies, Corydoras Catfish, and Rasboras. Avoid keeping them with larger or aggressive fish that may see them as prey. It’s also important to avoid overly boisterous species that may stress them out. When planning your community tank, consider the swimming levels of different fish to ensure a harmonious environment.
Health & Wellness
Monitoring the health of your Cardinal Tetras is essential for their well-being. Common health issues include ich, fin rot, and swim bladder disease. Signs of illness may include loss of appetite, abnormal swimming patterns, and visible lesions or discoloration. To prevent these issues, maintain stable water parameters and ensure a balanced diet. Regularly observe your fish for any changes in behavior or appearance, and quarantine new arrivals to prevent the introduction of diseases into your established tank.
Breeding Information
Breeding Cardinal Tetras can be a rewarding experience for aquarists. To encourage breeding, set up a separate breeding tank with soft, slightly acidic water and plenty of fine-leaved plants for the eggs to adhere to. The ideal temperature for breeding is around 26°C (78°F). Once the female is ready to spawn, she will lay eggs on the plants, which the male will fertilize. After spawning, it is essential to remove the adult fish, as they may eat the eggs. The eggs will hatch in about 24-36 hours, and the fry will be free-swimming after about a week. Feed them infusoria or finely crushed flake food until they are large enough for baby brine shrimp.
Acclimation Process
Introducing your new Cardinal Tetras to their new home should be done gradually to minimize stress. Begin by floating the sealed bag in the aquarium for about 15-20 minutes to equalize the temperature. After that, open the bag and gradually mix small amounts of tank water into the bag every 5 minutes for about 30 minutes. This process helps the fish acclimate to the water parameters of their new environment. Once acclimated, gently net the fish and place them in the tank, avoiding adding the water from the bag to your aquarium.
Long-term Care
Cardinal Tetras can live for up to 5 years or more with proper care. To ensure their longevity, maintain stable water conditions, provide a balanced diet, and monitor their health regularly. Regular tank maintenance, including water changes and substrate cleaning, is crucial to prevent the buildup of harmful substances. Additionally, keeping the tank well-planted and enriched with hiding spots will help reduce stress and promote natural behaviors.
Natural Habitat Recreation
To create a biotope that reflects the natural habitat of Cardinal Tetras, consider using dark substrates, driftwood, and a variety of live plants that mimic the dense vegetation found in the Amazon basin. Incorporate floating plants to create shaded areas and use natural materials to create hiding spots. The goal is to replicate the slow-moving waters and rich biodiversity of their native environment, which will not only enhance the beauty of your aquarium but also provide a comfortable and stimulating environment for your fish.
Seasonal Care Adjustments
As seasons change, so do the conditions in your aquarium. During warmer months, ensure that the water temperature remains stable and does not exceed 28°C (82°F). In cooler months, consider using a heater to maintain a consistent temperature. Additionally, monitor the water quality more frequently during seasonal transitions, as changes in temperature and light can affect fish behavior and health. Adjust the lighting duration to mimic natural daylight cycles, which can help maintain the well-being of your Cardinal Tetras.
Expert Tips
✓ Professional Advice
To enhance the colors of your Cardinal Tetras, consider adding a high-quality color-enhancing food to their diet. This will not only improve their appearance but also promote overall health. Additionally, ensure that the tank is well-cycled before introducing your fish to avoid stress from ammonia spikes. Regularly check for compatibility with other species and always observe their behavior to ensure a harmonious community tank.
Troubleshooting
If you notice any signs of illness in your Cardinal Tetras, such as lethargy, loss of appetite, or abnormal swimming behavior, it is important to act quickly. First, check the water parameters to ensure they are within the ideal range. If the water quality is compromised, perform a partial water change to improve conditions. If symptoms persist, consider isolating the affected fish in a quarantine tank to prevent the spread of disease. Consult with an aquatic veterinarian or a knowledgeable aquarist for further guidance on treatment options.
Scientific Background
The Cardinal Tetra belongs to the family Characidae, which encompasses a wide variety of freshwater fish. The scientific classification of Cardinal Tetras is as follows: Kingdom Animalia, Phylum Chordata, Class Actinopterygii, Order Characiformes, Family Characidae, and Genus Paracheirodon. Their natural habitat consists of slow-moving waters with dense vegetation, where they thrive in groups. Conservation efforts are important to ensure the sustainability of their populations in the wild, as habitat destruction poses a significant threat to their natural environments.
Advanced Care Techniques
For experienced aquarists, implementing advanced care techniques can enhance the health and vibrancy of Cardinal Tetras. Consider creating a breeding setup with specific water parameters tailored for spawning, and utilize high-quality foods to promote growth and coloration. Additionally, using a UV sterilizer can help maintain water clarity and reduce the risk of disease outbreaks. Regularly monitoring for signs of stress or illness and adjusting care practices accordingly will ensure a thriving community of these beautiful fish.
Water Quality Parameters
Optimal Range
24-27°C
6.5-7.5
0 ppm
Caution Zone
22-24°C or 27-29°C
6.0-6.5 or 7.5-8.0
0.25-0.5 ppm
Danger Zone
<22°C or >29°C
<6.0 or >8.0
>0.5 ppm
Monitoring Tip: Test water parameters weekly and perform regular water changes to maintain optimal conditions for your aquatic friends!
Frequently Asked Questions
Q: What tank size is required for Cardinal Tetras?
Cardinal Tetras thrive in a minimum tank size of 60 litres, although larger aquariums are preferable as they allow for better water stability and swimming space. A larger tank also facilitates the establishment of a more diverse aquatic environment, which is beneficial for their wellbeing. It is essential to provide ample swimming space, as these fish are active swimmers and enjoy exploring their surroundings. Additionally, a well-planted aquarium with hiding spots will help reduce stress and mimic their natural habitat. When setting up the tank, ensure it is properly cycled before introducing your fish friends.
✓ Expert Tip
Consider a larger shoal of Cardinal Tetras, as they feel more secure in groups of six or more, which also enhances their vibrant display.
Q: What water parameters do Cardinal Tetras require?
Cardinal Tetras prefer slightly acidic to neutral water with a pH range of 6.0 to 7.0. The hardness should be kept between 2 to 10 dGH, and the temperature should ideally be maintained between 23°C to 27°C. Regular water testing is essential to ensure these parameters remain stable, as fluctuations can stress the fish. It is advisable to use a quality water conditioner when adding tap water to the aquarium, as chlorine and chloramines can be harmful. Additionally, perform regular water changes of 10-15% weekly to maintain optimal water quality.
✓ Expert Tip
Consider using a sponge filter, as it provides gentle water movement and helps maintain water clarity.
Q: How often should I feed Cardinal Tetras?
Cardinal Tetras should be fed small amounts two to three times daily, with each feeding lasting no more than two to three minutes. A varied diet is crucial for their health, including high-quality flake foods, micro-pellets, and occasional live or frozen foods such as brine shrimp or daphnia. Overfeeding can lead to poor water quality, so ensure they consume the food quickly. It is beneficial to observe their feeding behaviour, as this can indicate their health and wellbeing.
✓ Expert Tip
Try to include some high-quality spirulina flakes in their diet to enhance their colouration and overall health.
Q: What are the best tank mates for Cardinal Tetras?
Cardinal Tetras are peaceful fish and are best kept with other non-aggressive species. Suitable tank mates include other small tetras, rasboras, and peaceful bottom dwellers like Corydoras. Avoid larger predatory fish or aggressive species, as they may stress or harm the tetras. When selecting tank mates, consider the size and temperament of the fishes to ensure compatibility. It is also advisable to maintain a well-planted aquarium to provide hiding spots and reduce territorial behaviour.
✓ Expert Tip
Introduce fish to the aquarium gradually to reduce stress and allow for proper acclimatisation.
Q: How do I properly acclimatise Cardinal Tetras to my aquarium?
To acclimatise Cardinal Tetras, float the sealed bag containing the fish in the aquarium for about 15 minutes to equalise the temperature. After that, gradually introduce small amounts of aquarium water into the bag, over a period of about one hour. This method helps them adjust to the water parameters of their new environment. Once acclimatised, gently release the fish into the aquarium using a net; avoid adding the water from the bag to prevent introducing any potential contaminants. Monitor the fish closely for signs of stress after introduction.
✓ Expert Tip
Keep the aquarium lights dimmed for the first few hours after introducing new fish to help reduce stress.
Q: What are the signs of healthy Cardinal Tetras?
Healthy Cardinal Tetras exhibit vibrant colours, clear eyes, and active swimming behaviour. They should be schooling together in groups, as solitary behaviour can indicate stress or illness. Look for signs of good appetite and normal waste production. Additionally, their fins should be intact and free from tears or fraying. If you notice any changes in behaviour, such as lethargy, hiding excessively, or loss of colour, it may be a sign of health issues, and further investigation is warranted.
✓ Expert Tip
Regular observation and maintaining stable water parameters are key to ensuring your tetras remain healthy.
Q: How do I successfully breed Cardinal Tetras?
Breeding Cardinal Tetras requires a separate breeding tank with soft, acidic water and gentle lighting. Introduce a pair of mature tetras, ideally in a ratio of one male to two females, to encourage spawning. Provide spawning mops or fine-leaved plants for the eggs to adhere to. Once spawning occurs, the adults should be removed, as they may eat the eggs. The eggs will hatch within 24-36 hours, and the fry should be fed infusoria or finely crushed flakes until they are large enough to accept small foods. Patience and careful monitoring are essential during this process.
✓ Expert Tip
Ensure stable water conditions and minimal disturbance in the breeding tank for the best results.
Q: What temperature should I maintain for Cardinal Tetras?
The ideal temperature range for Cardinal Tetras is between 23°C to 27°C. Maintaining a stable temperature is crucial, as fluctuations can lead to stress and health problems. Use a reliable aquarium heater and thermometer to monitor the temperature accurately. It is also advisable to place the heater in a location that allows for even distribution of warmth throughout the tank. Regularly check the temperature, particularly during seasonal changes, to ensure it remains within the preferred range.
✓ Expert Tip
Consider using a programmable heater for added convenience and precise temperature control.
Q: How long do Cardinal Tetras typically live in captivity?
In optimal conditions, Cardinal Tetras can live for 5 to 8 years in captivity. Their lifespan can be influenced by several factors, including water quality, diet, and overall tank conditions. Providing a stable environment with proper water parameters, regular maintenance, and a balanced diet is crucial for their longevity. Observing their behaviour and health regularly will also help to identify and address any potential issues before they become serious.
✓ Expert Tip
Maintain a stable environment and avoid overcrowding to help ensure your tetras live a long and healthy life.
Q: What type of substrate is most suitable for Cardinal Tetras?
Cardinal Tetras are quite adaptable regarding substrate, but a dark, fine-grained substrate is often preferred. This type of substrate not only enhances the vibrant colours of the fish but also mimics their natural habitat. Additionally, fine substrates allow for easy planting of live plants, which can provide hiding spots and enhance the overall aesthetics of the aquarium. Avoid sharp substrates, as they can injure the delicate fins of the tetras. Regularly vacuum the substrate during water changes to maintain cleanliness.
✓ Expert Tip
Incorporate live plants in your aquarium to enhance the natural feel and provide additional cover for your tetras.
Q: What behavioural patterns should I expect from Cardinal Tetras?
Cardinal Tetras are social and active fish, often seen swimming in schools. They exhibit a peaceful disposition and are known for their playful nature, darting around the aquarium and exploring their environment. These fish prefer to stay in groups, which helps reduce stress and encourages natural behaviours. You may also observe them foraging for food in the substrate or amongst plants. Providing a well-planted tank with ample swimming space is essential to encourage their natural behaviour and wellbeing.
✓ Expert Tip
Observe their behaviour; if they seem to be hiding excessively or are less active, it may indicate stress or health issues.
Q: How can I prevent common diseases in Cardinal Tetras?
Preventing diseases in Cardinal Tetras involves maintaining excellent water quality and stable parameters. Regular water changes, consistent feeding routines, and avoiding overcrowding are key practices. Quarantine new fish before introducing them to the main tank to prevent introducing pathogens. Providing a varied diet rich in nutrients will help bolster their immune system. Observe your fish regularly for any signs of illness, such as changes in colour, behaviour, or appetite, and take action promptly if any issues arise.
✓ Expert Tip
Consider adding aquarium salt in moderation, as it can help prevent certain ailments while being careful not to exceed safe levels.
Q: What lighting conditions do Cardinal Tetras prefer?
Cardinal Tetras thrive in dim lighting that mimics their natural habitat, which tends to be shaded by dense vegetation in the wild. Using a gentle light source, such as LED lights with a dimmer option, can help create a suitable environment. Additionally, incorporating floating plants can diffuse light intensity and provide cover. It is essential to ensure that the lighting is on a consistent schedule, ideally around 10-12 hours a day, to simulate day and night cycles, which supports their natural behaviour.
✓ Expert Tip
Observe how your tetras react to lighting; if they appear stressed or hide excessively, consider reducing the brightness.
Q: How do I recognise stress in Cardinal Tetras?
Signs of stress in Cardinal Tetras include excessive hiding, lethargy, and loss of colour. They may also display erratic swimming patterns or remain near the filter outlet to escape current. Additionally, if they are not schooling with their companions, it may indicate stress. Monitoring their behaviour regularly is vital; if you notice any of these signs, assess the water quality and tank conditions promptly, as addressing stressors early can prevent serious health issues.
✓ Expert Tip
Creating a well-planted tank with plenty of hiding spots can help reduce stress levels for your tetras.
Q: What natural habitat conditions should I replicate for Cardinal Tetras?
In their natural habitat, Cardinal Tetras are found in slow-moving waters with plenty of vegetation, submerged branches, and leaf litter. To replicate these conditions, provide a well-planted aquarium with live plants and hiding spots. Incorporate driftwood and leaf litter to mimic their natural environment. Maintaining slightly acidic water and stable temperatures will also help create a comfortable habitat. Additionally, consider using a dark substrate to enhance their colours and provide a more natural feel.
✓ Expert Tip
Adding natural leaves, such as Indian almond leaves, can provide beneficial tannins and improve the overall health of your tetras.
2 reviews for 6 X Cardinal Tetras – Paracheirodon Axelrodi – South American Tetras (6)
Add a review
Related products
Emily Carter (verified owner) –
As an aquarium lover with a soft spot for freshwater fish, I couldn’t be happier with my purchase of six Cardinal Tetras! These little guys arrived in perfect condition, showcasing their vibrant blue and red coloring that truly lights up my 20-gallon tank. I’ve had them for about two weeks now, and they have settled in beautifully, swimming actively and peacefully among my plants.
Compared to other tetras I’ve kept, like Neon Tetras, I find the Cardinal Tetras’ colors to be even more striking and they seem to have a more serene demeanor. Watching them dart around is such a joy and really enhances the aquarium experience.
If you’re considering adding some personality to your tank, I can’t recommend these enough. They thrive in groups, so I suggest buying at least six like I did. Just a quick note: they can be a bit shy at first, so providing hiding spots is essential. Overall, my experience has been fantastic, and I can’t wait to see how they flourish in the coming months. Would definitely buy again!
Emma Carter (verified owner) –
I recently purchased the 6-pack of Cardinal Tetras, and I couldn’t be happier! These little beauties have completely transformed my aquarium into a vibrant underwater paradise. It’s been about two weeks since I introduced them into my tank, and they’ve settled in beautifully. Their colors are just as stunning as I had hoped, and they swim gracefully in a tight school, which is mesmerizing to watch.
As a caring fish parent, I always prioritize fish health and happiness. I’ve noticed that these South American tetras thrive in my tropical setup, where the temperature is a comfy 76°F. They get along wonderfully with my other freshwater fish, and I haven’t seen any signs of stress or aggression. The only slight concern I had was their initial shyness, but with some patience and the right aquatic plants for cover, they are now much more confident.
Compared to other neon tetras I’ve kept, these Cardinal Tetras seem to have a more vibrant hue and are hardier overall. I highly recommend this pack for both beginners and seasoned aquarists looking to add some exciting color to their tanks. You won’t regret it – these little guys have stolen my heart!