Original price was: £47.49.£39.99Current price is: £39.99.
Welcome these beautiful creatures into your aquarium! This listing includes 50 individual Cardinal Tetras, also known as Paracheirodon Axelrodi. Their stunning neon colors and graceful movements make them perfect companions for peaceful community aquariums, enhancing your aquatic beauty.
1859 in stock
The Cardinal Tetra, scientifically known as Paracheirodon axelrodi, is a small yet stunning freshwater fish native to the Amazon River Basin in South America. These beautiful creatures thrive in the slow-moving waters of blackwater rivers, where they inhabit densely planted areas rich in organic debris. Their vibrant coloration, characterized by a bright blue stripe running from the eye to the adipose fin and a striking red stripe extending from the middle of the body to the base of the caudal fin, makes them a favorite among aquarists.
Cardinal Tetras are peaceful schooling fish, often found in groups of six or more in their natural habitat, which enhances their social behavior and overall well-being. As such, they are perfect companions for peaceful community aquariums, where they can exhibit their natural behaviors and thrive harmoniously with other species.
| 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 |
Cardinal Tetras are known for their social and peaceful nature, making them ideal for community tanks. In the wild, they are often found in large schools, which not only provides safety from predators but also encourages natural behaviors such as schooling and foraging. Their swimming patterns are characterized by quick bursts of speed followed by moments of stillness, often darting in and out of vegetation. This behavior can be mimicked in home aquariums by providing plenty of plants and hiding spots to create a comfortable environment.
When kept in groups of six or more, Cardinal Tetras display a more vibrant coloration and engage in playful interactions, which can be a delight to observe. They are generally non-aggressive, but it is important to avoid housing them with larger, more aggressive fish that may see them as prey.
Creating an ideal environment for Cardinal Tetras involves replicating their natural habitat. A well-planted aquarium with plenty of hiding spots is essential. Use fine-grained substrate to mimic the soft, sandy bottoms of their native waters. Incorporate live plants such as Java Moss, Anubias, and Amazon Sword, which provide cover and help maintain water quality. Floating plants can also be beneficial, as they diffuse light and create a shaded area that mimics their natural environment.
Additionally, consider adding driftwood or rocks to create territories and hiding spots. A gentle filter is recommended to maintain water quality without creating strong currents, as Cardinal Tetras prefer calm waters. Regular water changes are crucial to keep the environment clean and healthy, ideally changing 10-20% of the water weekly.
Maintaining optimal water quality is vital for the health and longevity of Cardinal Tetras. The ideal water temperature should range between 22-28°C (72-82°F), with a stable pH level between 5.5 and 7.0. Soft water with a hardness level of 1-10 dGH is preferred, as these fish naturally inhabit soft, acidic waters.
Regular testing of water parameters is essential to ensure a stable environment. Ammonia and nitrite levels should always be at 0 ppm, while nitrate levels should be kept below 20 ppm. Utilizing a quality water conditioner can help remove harmful chemicals and heavy metals from tap water. Additionally, incorporating live plants can aid in natural filtration and provide oxygenation, contributing to a healthier ecosystem. Frequent water changes and monitoring of parameters will help prevent common issues such as stress and disease.
Cardinal Tetras are omnivorous and thrive on a varied diet that includes high-quality flake food, micro-pellets, and live or frozen foods such as daphnia, brine shrimp, and bloodworms. A balanced diet is crucial for maintaining their vibrant colors and overall health. Feed them small portions two to three times a day, ensuring that all food is consumed within a few minutes to prevent water quality issues.
It is important to observe their feeding behavior, as some individuals may be more timid and require additional encouragement to eat. Supplementing their diet with vegetable matter, such as spirulina flakes or blanched spinach, can also enhance their nutritional intake. Establishing a consistent feeding schedule will help promote healthy growth and vitality.
✓ Peaceful Tank Mates
Cardinal Tetras are best kept with other peaceful species such as:
Avoid housing Cardinal Tetras with larger or aggressive fish, such as Cichlids or larger Barbs, as they may view them as prey. The ideal community tank should consist of small, peaceful species that share similar water parameter requirements. A well-planned community tank not only enhances the beauty of your aquarium but also provides a stress-free environment for all inhabitants.
To ensure the health and well-being of your Cardinal Tetras, regular monitoring for signs of illness is essential. Common health issues include ich (white spot disease), fin rot, and stress-related ailments. Maintaining stable water conditions, providing a balanced diet, and minimizing stress through proper tank mates and hiding spots can help prevent these issues.
If you notice any signs of illness, such as lethargy, loss of appetite, or abnormal swimming behavior, it is crucial to act quickly. Quarantine any affected fish and treat them in a separate tank to prevent the spread of disease. Regular water changes and maintaining a clean environment are key factors in promoting long-term health.
Breeding Cardinal Tetras can be a rewarding experience for aquarists. To encourage spawning, it is best to set up a separate breeding tank with soft, acidic water and plenty of fine-leaved plants for the eggs to adhere to. A temperature of around 26-28°C (78-82°F) is ideal for breeding. Once the female is ready to spawn, she will become plump with eggs, and the male will display courtship behaviors.
After spawning, it is advisable to remove the parents from the breeding tank, as they may eat their eggs. The eggs will hatch within 24-36 hours, and the fry can be fed infusoria or finely crushed flakes until they grow large enough to consume small food particles. Proper care of the fry is essential for their development into healthy juvenile fish.
When introducing Cardinal Tetras to a new aquarium, it is crucial to acclimate them properly to minimize stress. Begin by floating the sealed bag containing the fish in the aquarium for about 15-20 minutes to equalize the temperature. After this, gradually add small amounts of aquarium water to the bag every 5-10 minutes for about an hour. This process helps the fish adjust to the water parameters of their new environment.
Once acclimated, gently release the fish into the aquarium, avoiding the introduction of bag water to prevent contamination. Monitoring their behavior for the first few days is essential, as they may take some time to adjust to their new surroundings.
Cardinal Tetras typically live for 5-8 years in a well-maintained aquarium, provided they are given proper care. As they grow, it is important to monitor their size and ensure that the tank remains spacious enough for their comfort. Regular water testing and maintenance will contribute to their health and longevity.
It is also essential to keep an eye on their social dynamics within the tank, as changes in behavior may indicate stress or compatibility issues. By providing a stable environment, a balanced diet, and regular health checks, you can enjoy the beauty and charm of these delightful fish for many years to come.
To recreate the natural habitat of Cardinal Tetras in your aquarium, focus on replicating the soft, dark waters of the Amazon. This can be achieved by using dark substrates, such as fine sand or gravel, and incorporating driftwood and leaf litter to simulate their natural environment. Adding tannins to the water through the use of Indian almond leaves or peat can help create the acidic conditions they thrive in.
Additionally, providing plenty of live plants will not only enhance the aesthetic appeal of the aquarium but also contribute to the overall health of the fish by improving water quality and offering hiding spots. Creating a biotope that reflects their natural habitat will encourage natural behaviors and promote a healthy, thriving community.
As seasons change, it is important to adjust the care routine for your Cardinal Tetras. During warmer months, ensure that the water temperature does not exceed 28°C (82°F) by monitoring the tank’s temperature regularly and using fans or air conditioning if necessary. In cooler months, maintaining a stable temperature is crucial, as fluctuations can stress the fish.
Additionally, lighting duration may need to be adjusted to mimic natural day/night cycles. During breeding seasons, consider providing additional hiding spots and spawning sites to encourage reproduction. Regular monitoring of water parameters throughout the year will help maintain a healthy environment for your fish friends.
For those looking to enhance their experience with Cardinal Tetras, here are some expert tips:
By following these expert tips, you can create a thriving environment for your Cardinal Tetras and enjoy their beauty for years to come.
If you encounter issues with your Cardinal Tetras, it is important to address them promptly. Common problems include stress, disease, and compatibility issues. If your fish are hiding excessively or exhibiting unusual swimming patterns, check for signs of aggression from tank mates or environmental stressors such as poor water quality.
If disease is suspected, observe for symptoms such as white spots, frayed fins, or abnormal behaviors. Quarantine affected fish and treat accordingly. Additionally, ensure that the tank is not overcrowded, as this can lead to stress and health issues. Regular monitoring and prompt action can help mitigate these problems and ensure a healthy environment for your aquatic companions.
The Cardinal Tetra belongs to the family Characidae, which includes many other popular aquarium fish. This species was first described in the 1950s and has since become a staple in the aquarium trade due to its striking appearance and peaceful nature. Conservation efforts are important for maintaining wild populations, as habitat destruction and pollution pose significant threats to their natural habitats.
Understanding the scientific background of Cardinal Tetras can enhance your appreciation for these fish and encourage responsible care practices. By providing a suitable home and advocating for sustainable practices, aquarists can contribute to the conservation of this beautiful species.
For experienced aquarists looking to take their care of Cardinal Tetras to the next level, consider implementing advanced techniques such as breeding programs, biotope aquariums, and specialized feeding regimens. Breeding programs can involve selective breeding to enhance desirable traits such as coloration and size.
Biotope aquariums that closely mimic the natural habitat of Cardinal Tetras can lead to healthier fish and more vibrant displays. Additionally, experimenting with different feeding techniques, such as live foods or specialized diets, can improve growth rates and overall health. Engaging in these advanced care techniques requires a deeper understanding of the species and a commitment to providing the best possible environment for your fish friends.
Cardinal Tetras thrive best in groups within a well-maintained aquarium of at least 60 litres. A larger tank allows for better water quality and stability, which is crucial for these delicate fish. Ideally, a 75-litre tank or larger is recommended to accommodate their schooling behaviour and to create a harmonious environment. It is also essential to provide ample swimming space and hiding spots, as they are naturally found in densely planted waters in the Amazon basin. Aim to create a lush, planted aquarium with open swimming areas to mimic their natural habitat, thereby enhancing their colouration and reducing stress.
✓ Expert Tip
Consider using a softer substrate and adding plants to create a natural environment that encourages natural behaviours.
Cardinal Tetras prefer slightly acidic to neutral water conditions, with a pH level between 6.0 and 7.0. The temperature should be maintained between 22°C to 28°C, as they thrive in warmer waters. It is crucial to keep the water clean and well-filtered, with a general hardness of 2-10 dGH. Regular water changes of 10-15% weekly will help maintain these parameters, ensuring a healthy environment for your Cardinal Tetras. Additionally, using a water conditioner to remove harmful chemicals like chlorine is advisable when preparing tap water for your aquarium.
✓ Expert Tip
Investing in a reliable water testing kit will help you monitor and maintain optimal water conditions.
Cardinal Tetras should be fed small amounts two to three times daily. A varied diet is essential for their health and colour enhancement. High-quality flake or pellet food specifically formulated for tropical fish can be used as a staple, supplemented with live or frozen foods such as brine shrimp and daphnia. It is important to feed only what they can consume within a few minutes to prevent overfeeding, which can lead to water quality issues. Regularly observe your fish during feeding to adjust portion sizes accordingly.
✓ Expert Tip
Incorporating a variety of foods not only enhances their colour but also promotes overall health and vitality.
Cardinal Tetras are peaceful fish and do best in a community tank with similarly temperate species. Ideal tank mates include other small tetras, rasboras, guppies, and peaceful bottom dwellers like Corydoras. Avoid larger or aggressive fish that may view them as prey. When establishing a community aquarium, ensure that all species have similar water parameter requirements and temperaments to create a harmonious environment. This not only enhances their natural behaviours but also contributes to a vibrant, lively aquarium.
✓ Expert Tip
Observe interactions closely when introducing new tank mates to ensure compatibility among all species.
Proper acclimatisation is crucial for the health of your Cardinal Tetras. Begin by floating the sealed bag in your aquarium for about 15-20 minutes to equalise the temperature. Then, gradually introduce aquarium water into the bag at a ratio of 1:1 over the next hour. This can be done by slowly adding small amounts of tank water into the bag every 10-15 minutes. Once acclimatised, gently release the fish into the aquarium using a net, discarding the bag water to prevent contamination. This process helps reduce stress and increases the likelihood of successful integration into your tank.
✓ Expert Tip
Always monitor new fish for signs of stress or illness after acclimatisation.
Healthy Cardinal Tetras exhibit vibrant colours, active swimming, and are social within their school. They should display a natural curiosity, exploring their environment and interacting with tank mates. Signs of distress or illness include lethargy, faded colours, clamped fins, and abnormal swimming patterns. Regular observation is key to ensuring their well-being. Maintaining optimal water conditions and providing a varied diet will contribute to their overall health and vibrancy. Early detection of health issues can lead to timely intervention, making it essential to stay attentive to their behaviours.
✓ Expert Tip
Create a checklist of health indicators to help monitor your fish friends regularly.
Breeding Cardinal Tetras can be a rewarding experience, though it requires specific conditions. To encourage breeding, maintain a separate breeding tank with soft, acidic water and dim lighting. Introduce a ratio of one male to two females, as males are generally more colourful and active. Spawning typically occurs in the early morning, with females laying eggs on plants or spawning mops. Remove the adults after spawning to prevent them from eating the eggs. The eggs will hatch within 24-36 hours, and fry should be fed infusoria or finely crushed flakes until they are large enough to consume standard food. Regular water changes and maintaining proper parameters are crucial for fry survival.
✓ Expert Tip
Ensure that the breeding tank is well-planted to provide shelter for the fry as they develop.
Cardinal Tetras thrive in warmer temperatures, ideally ranging from 22°C to 28°C. It is essential to provide a stable environment, as fluctuations can stress the fish, potentially leading to health issues. A reliable aquarium heater is recommended to maintain the desired temperature range, and an aquarium thermometer should be used to monitor it regularly. Additionally, placing the aquarium in a location away from direct sunlight and drafts can help prevent temperature spikes or drops, ensuring a comfortable habitat for your fish friends.
✓ Expert Tip
Consider using an aquarium controller to automate temperature adjustments and maintain stability.
With proper care, Cardinal Tetras can live for approximately 5 to 8 years in captivity. Their lifespan can be significantly influenced by factors such as water quality, diet, and overall tank conditions. Maintaining stable water parameters and providing a varied diet are crucial for their longevity. Regular water changes and monitoring for signs of stress or illness can help ensure a healthy and thriving environment. By creating optimal living conditions, you can enhance the quality of life for these beautiful aquatic companions.
✓ Expert Tip
Keep a log of water parameters and fish health to track changes and improve care practices.
For Cardinal Tetras, a soft substrate like fine gravel or sand is recommended. This not only mimics their natural habitat but also allows for easy foraging behaviours, which are typical for these fish. Dark substrates can enhance their vibrant colours and provide a lovely contrast, making them stand out in the aquarium. Additionally, a substrate that supports plant growth can contribute to a more natural environment, offering hiding spots and creating a sense of security, which is beneficial for the overall well-being of your fish friends.
✓ Expert Tip
Consider layering your substrate to create depth and enhance the aesthetic appeal of your aquarium.
Cardinal Tetras are known for their schooling behaviour, often seen swimming in groups, which helps provide them with a sense of security. They are generally peaceful and can be quite curious, often exploring their environment and interacting with other fish. When kept in appropriate numbers, they exhibit natural behaviours such as foraging and socialising. However, stress can manifest in hiding or erratic swimming patterns, so it’s essential to ensure they are in a suitable environment with proper tank mates and conditions that mimic their natural habitat.
✓ Expert Tip
Provide plenty of plants and decorations to encourage natural behaviours and reduce stress.
Preventing diseases in Cardinal Tetras largely revolves around maintaining optimal water quality and a stress-free environment. Regular water changes, proper filtration, and monitoring water parameters are essential. Quarantining new fish before introducing them to your main tank can prevent the spread of disease. Additionally, providing a varied diet rich in nutrients will help bolster their immune systems. Keeping an eye on their behaviour and appearance can help catch illnesses early, allowing for prompt treatment if necessary.
✓ Expert Tip
Consider adding aquarium salt in moderation to help prevent certain diseases, but consult with an expert beforehand.
Cardinal Tetras prefer subdued lighting that mimics their natural habitat of shaded waters. Bright lighting can cause stress and lead to hiding behaviours. Using a combination of floating plants and taller aquarium plants can help diffuse light levels, creating a more natural environment. LED lights with adjustable brightness settings are particularly beneficial, allowing you to tailor the lighting to the needs of your aquarium. A day/night cycle of 8-10 hours is generally recommended for optimal health and behaviour.
✓ Expert Tip
Consider using a dimmer or timer to simulate natural light cycles, promoting a healthy environment.
Recognising stress in Cardinal Tetras is crucial for their well-being. Common signs include erratic swimming, hiding more than usual, clamped fins, and a loss of colour vibrancy. Stress can arise from various factors such as poor water quality, inappropriate tank mates, or sudden changes in the environment. Ensuring a peaceful community tank, maintaining stable water parameters, and providing adequate hiding spots can help reduce stress levels. Regular monitoring of their behaviour and appearance will enable you to address any issues promptly.
✓ Expert Tip
Consider establishing a routine for feeding and tank maintenance to create a stable environment.
To create a suitable environment for Cardinal Tetras, replicate their natural habitat found in the Amazon basin. This involves maintaining slightly acidic, soft water, with plenty of hiding spots and plants. Incorporating driftwood and leaf litter can mimic the shaded, densely vegetated waters they are accustomed to. A well-planted aquarium not only provides shelter but also encourages natural behaviours. Additionally, maintaining stable temperatures and water quality will greatly enhance their health and overall happiness in the aquarium.
✓ Expert Tip
Regularly adjust the layout of plants and decorations to stimulate their environment and reduce stress.
Emily Thompson (verified owner) –
I’ve been an aquarium hobbyist for over five years, and I recently decided to add 50 Cardinal Tetras (Paracheirodon axelrodi) to my community tank. After about two months of observing them, I couldn’t be happier! These dazzling little fish bring a vibrant splash of color with their striking blue and red hues, and they have such lively personalities!
What I love most is how peaceful and social they are; they thrive in schools and have really brought my tank to life. I feed them a mix of high-quality flakes and some frozen foods, and they’ve been healthy and active. Compared to neon tetras, which I’ve also kept, the Cardinal Tetras are slightly larger and have more vivid coloration, making them a stunning addition to any setup.
One minor concern is that they can be sensitive to water quality, so I recommend investing in a good filter and being diligent with water changes. But with proper care, they flourish! I highly recommend these beautiful fish to anyone looking to enhance their aquarium. They are perfect for beginners and experienced aquarists alike. It’s been a joy to watch them swim gracefully around—definitely worth every penny!
Laura Benson (verified owner) –
I’ve been keeping tropical fish for over 5 years, and I recently decided to add 50 Cardinal Tetras to my peaceful community aquarium. It’s been about two months since I introduced them, and I couldn’t be happier! These stunning neon tetras are not only beautiful with their vibrant blue and red colors, but they also add such a lively dynamic to my tank. I love watching them school together; their synchronized swimming is mesmerizing!
What truly stands out is how easy they are to care for compared to other small fish I’ve kept. They acclimated quickly and have shown no signs of stress. My water parameters have remained stable, and their health is evident in their bright coloration and active behavior. One minor note is to ensure they have plenty of hiding spots because they definitely appreciate some cover, especially when feeling shy.
For anyone considering adding these gorgeous fish to their aquarium, I wholeheartedly recommend them—especially for beginners or anyone with a community tank! They thrive in groups, so getting a sizable school is essential. Shipping was quick, and they arrived healthy and happy. These cardinal tetras have definitely brightened up my aquarium experience!
Emily Thompson (verified owner) –
I recently added 50 Cardinal Tetras to my community tank, and I couldn’t be happier! After about a month of watching them thrive, I can confidently say these little guys are a perfect addition. Their vibrant blue and red colors create a stunning display, especially when they school together—it’s mesmerizing.
I appreciate how peaceful they are, making them ideal companions for my other fish. Unlike some other neon tetras I’ve kept in the past, these Cardinal Tetras seem more robust and active, which I believe comes from their healthy shipping conditions. They arrived promptly and showed no signs of stress, which is always a relief.
A little tip for new buyers: ensure your tank is well-planted with hiding spots; it really helps them feel secure!
Overall, I highly recommend Cardinal Tetras for anyone looking to add beauty and liveliness to their aquarium. They’re not just neon tetras; they’re a delightful reflection of life in the water! I will definitely buy from this seller again.
Lily Rodriguez (verified owner) –
I’m an avid aquarium enthusiast, and I recently added 50 Cardinal Tetras to my peaceful community tank, and they have completely transformed the space! These stunning little tropical fish are a joy to observe, especially as they swim in unison, showcasing their vibrant colors. After just a week, I noticed how they quickly adapted to their new home and started forming their tight-knit school, which is so heartwarming to watch.
I have to say, compared to other schooling fish I’ve kept, these neons are incredibly easy-going and thrive in harmony with my other tank mates. Their vibrant blue and red hues really enhance the aquarium’s beauty, making it a stunning centerpiece in my living room. My tank is moderately planted, which allows them to feel secure and happy.
One thing to note is that they do prefer a larger group, so buying in bulk was a fantastic choice. I highly recommend these to anyone looking to bring some lively action and color to their freshwater setup, whether you’re a beginner or a seasoned aquarist. Just ensure your tank parameters are suitable, and you’ll be rewarded with a mesmerizing display! Overall, I couldn’t be happier with this purchase and would absolutely buy again from this supplier!