Complete Guide to Cardinal Tetra Paracheirodon Axelrodi

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Paracheirodon cardinalis
Credit: wikimedia.org, Paracheirodon cardinalis

The Cardinal Tetra Paracheirodon Axelrodi is a popular freshwater aquarium fish native to the Amazon River basin.

They are a small species, reaching a maximum length of about 2.5 cm.

Cardinal Tetras are a schooling fish and should be kept in groups of at least 10-15 individuals.

In the wild, they inhabit slow-moving waters with dense vegetation.

Curious to learn more? Check out: Chinese Fighting Fish Lifespan

Care and Maintenance

To keep your cardinal tetras happy and healthy, it's essential to mimic their natural environment. They thrive in slow-moving waterways with a pH level between 4.0 and 7.5.

You'll want to maintain a temperature range of 73-84°F (23-29°C) in the aquarium, which is a relatively narrow range. This will ensure your tetras feel comfortable.

For a 15- to 20-gallon aquarium or larger, it's recommended to keep at least 8-10 cardinal tetras together. This will provide them with the schooling experience they need to feel secure.

To create a thriving ecosystem, consider adding other peaceful community species like corydoras catfish, kuhli loaches, or algae eaters like snails or otocinclus.

Lifespan

Colorful tropical fish swimming in an aquarium showcasing diverse marine life.
Credit: pexels.com, Colorful tropical fish swimming in an aquarium showcasing diverse marine life.

Cardinal tetras can live for several years in captivity, but in nature, they might only live for a single year.

A key factor in their lifespan is the water conditions they're exposed to, as seen in a study conducted in Manaus, Brazil.

Their tolerance for temperature fluctuations is quite low, and they can perish at temperatures below 19.6 °C (67.3 °F) or above 33.7 °C (92.7 °F).

Maintaining a stable pH level between 2.9 and 8.8 is also crucial to ensure their survival.

By mimicking their natural setup, you can help your cardinal tetras thrive and live a longer life.

Set Up an Aquarium

To set up an aquarium for cardinal tetras, you'll want to replicate their native habitats with slow-moving waterways and heavy vegetation. This means adding plenty of live plants, leaf litter, and driftwood to create hiding spots for your fish.

Cardinal tetras are adaptable to different water conditions, but they thrive in pH levels between 4.0 and 7.5, with soft to moderate water hardness. They're also comfortable in temperatures ranging from 73 to 84°F (23 to 29°C).

For another approach, see: Rasboras and Neon Tetras

Credit: youtube.com, How to Set Up a Freshwater Aquarium | Big Al's

For a 15- to 20-gallon aquarium or larger, it's recommended to keep at least 8-10 cardinal tetras together, as they're schooling fish that feel most comfortable with a large number of buddies.

You can pair cardinal tetras with other peaceful community species, such as corydoras catfish, kuhli loaches, and snails. They also get along well with top-dwelling fish like pencilfish and hatchetfish, and bottom dwellers like otocinclus and bristlenose plecos.

Aquarium and Trade

In the aquarium trade, the cardinal tetra, Paracheirodon axelrodi, is highly valued by the local population in Barcelos, on the banks of Brazil's Rio Negro. They catch fish for the aquarium trade, acting as stewards for the environment.

Over 92 million cardinal tetras were exported from the state of Amazonas between 2006 and 2015, accounting for 64.57% of all ornamental fish exports from the state during this time.

The local people have a sustainable living from the fishery, which may be one reason they don't get involved in environmentally damaging activities like deforestation.

Aquarium Trade

Credit: youtube.com, From jungle to the world's fish tanks: Colombia's booming aquarium trade | AFP

The aquarium trade is a fascinating industry that supports local communities and the environment. Over 92 million cardinal tetras were exported from the state of Amazonas between 2006 and 2015.

The cardinal fishery in Barcelos, Brazil is a prime example of a sustainable industry. The local population catches fish for the aquarium trade, making a living without harming the environment.

Cardinal tetras are highly valued in the aquarium trade, accounting for 64.57% of all ornamental fish exports from the state of Amazonas between 2006 and 2015.

The cardinal tetra is a popular choice for aquarium enthusiasts, and for good reason. It's a beautiful fish, and its popularity has helped support the local community in Brazil.

Here are some interesting facts about the cardinal tetra:

  • Cardinal tetras are also known as Paracheirodon axelrodi.
  • They were first described in 1956 by Leonard Peter Schultz.
  • Cardinal tetras are considered a least concern species by the IUCN Red List.

Video Shows Available Fish in Stock

If you're planning to visit your local aquarium or pet store, you'll want to know what fish are available in stock. The aquarium and trade industry has a variety of fish species to offer.

Credit: youtube.com, [BANGKOK] Chatuchak Aquarium Fish Market "Aquarium Lovers Must Visit!" | Thailand [4K HDR]

The most common freshwater fish in stock include guppies, goldfish, and neon tetras. These species are popular among aquarium hobbyists due to their vibrant colors and ease of care.

Some aquariums and pet stores also carry saltwater fish, such as clownfish and damselfish. These fish require more specialized care and equipment, making them less suitable for beginners.

If you're looking for a low-maintenance option, consider the hardy and adaptable zebra danio. This fish is easy to care for and can thrive in a well-maintained aquarium.

If this caught your attention, see: Black Phantom Tetra Care

Breeding and Review

To breed cardinal tetras, condition the adults with high protein foods like live baby brine shrimp and tubifex worms. Select the best-looking male and female, or a group of at least 6 tetras, and keep the aquarium in complete darkness until the eggs hatch.

The eggs usually hatch within 1-3 days, and the newborns are unable to swim and have underdeveloped eyes. Once they are large enough, start feeding them live baby brine shrimp to increase their survival rate.

Cardinal tetras are known to thrive in large schools surrounded by thick foliage, and one user reported that their cardinal tetras looked "pretty discoloured" before being introduced to a tank, but "coloured up beautifully" after just 25 minutes.

Breed Tetras

Credit: youtube.com, How to Breed Cardinal Tetras Using a Breeding Box

To breed cardinal tetras, condition the adults by feeding them high protein foods like live baby brine shrimp and tubifex worms.

Select the best-looking male and female, looking for males that are slimmer and females that are larger and rounder.

Put a group of at least 6 tetras in the breeding tank, as this will increase the chances of successful breeding.

Because the eggs and young fry are sensitive to light, keep the aquarium in complete darkness.

Remove the adults at the first sign of eggs.

The eggs usually hatch within 1-3 days, and the newborns are unable to swim and have underdeveloped eyes.

Cardinal tetras feel most comfortable in large schools surrounded by thick foliage.

One Review

The reviewer, Jake Hawver, gave Cardinal Tetras a 5-star rating, highlighting their excellent quality and value for the price.

They came healthy and quickly, which is a testament to the seller's shipping and handling practices.

The reviewer was impressed that the Cardinal Tetras colored up beautifully after being in the tank for 25 minutes, suggesting that they were a hardy and adaptable species.

This positive experience is a great example of what to expect from a reputable seller.

Habitat and Behavior

Credit: youtube.com, Cardinal Tetra Spawning Behavior

Cardinal tetras are found in shoals, preferring slow-moving, middle-layer water. This is ideal for their natural behavior.

They thrive in slightly acidic water with a pH of 5.8 and a temperature of 24°C. This specific environment is crucial for their well-being.

Cardinal tetras are active during the day and live in schools of several thousands in natural habitats. They are a social and colonial species.

Here are some key behaviors and habitats of cardinal tetras:

  • tropical
  • freshwater
  • diurnal
  • motile
  • migratory
  • sedentary
  • social
  • colonial

Description

In captivity, cardinal tetras appear to grow larger than they do in the wild.

Their large stomach and small gut contribute to this growth, making them a popular choice for aquarium enthusiasts.

The iridescence of their blue line is a structural color, caused by refraction of light within guanine crystals in special cells called iridocytes.

Tetras' Diet

Tetras are not fussy eaters and love to consume any fish foods that are small enough to fit in their mouths.

In the wild, they feed on tiny crustaceans, insect larvae, little worms, and zooplankton.

Credit: youtube.com, CARDINAL in NATURE / NEON TETRA in NATURE, see the NATURAL HABITAT of PARACHEIRODON AXELRODI!

A varied diet is key to their health, so be sure to feed them a mix of crushed flakes, nano pellets, and other small foods.

They also go crazy for daphnia, frozen cyclops, and live baby brine shrimp - it's like a never-ending smorgasbord for these little fish!

Freeze-dried tubifex worms and Easy Fry and Small Fish Food are also great options to add some variety to their diet.

A unique perspective: Hypostomus Plecostomus Diet

Habitat

Paracheirodon axelrodi individuals prefer slow moving, middle layer water in shoals.

They thrive in a slightly acidic environment with a pH of around 5.8. This is a key factor in their habitat preferences.

Paracheirodon axelrodi are found in tropical freshwater regions.

Their ideal temperature is a relatively cool 24°C, which is crucial for their survival.

Here are some key details about the habitat of Paracheirodon axelrodi:

  • Habitat Regions: tropical
  • Type of Water: freshwater

Behavior

Cardinal tetras are active during the day and live in large schools of thousands in their natural habitats. This social behavior is crucial for their well-being.

Credit: youtube.com, Animal Behavior Series Ep4 - Habitat (Choosing Where to Live)

To replicate this behavior in an aquarium, it's essential to keep at least 10 individuals together. In smaller groups, cardinal tetras tend to develop sickness due to stress.

These fish are known to make small-scale seasonal migrations upstream or downstream depending on the water level during a particular season. This adaptability is a key aspect of their behavior.

Here are some key behaviors exhibited by cardinal tetras:

  • natatorial
  • diurnal
  • motile
  • migratory
  • sedentary
  • social
  • colonial

Communication and Perception

Communication and Perception play a crucial role in the lives of cardinal tetras. They use tactile cues during mating, which suggests they have a sophisticated system of communication.

Cardinal tetras seem to be aware of the number of other fish in a tank, which implies they can use visual cues to communicate with each other. They likely rely on a combination of visual and tactile signals to convey information.

In terms of perception, cardinal tetras use their eyesight and tactile cues to navigate their environment. They can also perceive sound through the water, which is a vital sense for a fish.

Here's a breakdown of the communication and perception channels used by cardinal tetras:

  • Communication Channels
  • visual
  • tactile
  • Perception Channels
  • visual
  • tactile
  • chemical

Predation and Ecosystem

Credit: youtube.com, Cardinal Tetra (Paracheirodon axelrodi) at the Aquatic Design Centre - London

Cardinal tetras have a unique defense mechanism to protect themselves from predators. Their bright, neon, lateral stripe makes it difficult for predators to single out and attack an individual.

Their schooling behavior also helps to protect individuals from predators. This behavior is a common strategy among schooling fish.

In the wild, cardinal tetras likely fall prey to larger fish and other small to medium aquatic predators as adults, fry, and eggs.

They can also become prey for larger fish in an aquarium, such as angelfish.

Cardinal tetras serve as important predators of their small, invertebrate and zooplanktonic prey.

Here's a list of their known predators:

  • Larger fish
  • Other small to medium aquatic predators

Classification

The Cardinal Tetra Paracheirodon axelrodi is a member of the Animalia kingdom. It's a pretty broad category, but it's a great starting point for understanding where this fish fits in.

Animalia includes information on the species, with 1 piece of information available. If you're interested in learning more, you can check out the 22861 pictures of animals in this kingdom.

Credit: youtube.com, Fish profiles: Cardinal Tetra

The Cardinal Tetra Paracheirodon axelrodi is also a chordate, which means it belongs to the Phylum Chordata. This phylum includes 15213 pictures of chordates, making it a great resource for learning about the species' anatomy.

As a vertebrate, the Cardinal Tetra Paracheirodon axelrodi is part of the Subphylum Vertebrata. This subphylum includes 709 sounds of vertebrates, which can be a fun way to learn about the species' behavior.

Here's a breakdown of the Cardinal Tetra Paracheirodon axelrodi's classification:

  • Kingdom: Animalia
  • Phylum: Chordata
  • Subphylum: Vertebrata
  • Class: Actinopterygii
  • Order: Characiformes
  • Family: Characidae
  • Genus: Paracheirodon
  • Species: Paracheirodon axelrodi

I hope this helps you understand the Cardinal Tetra Paracheirodon axelrodi's classification!

Maxine Hermann

Senior Writer

Maxine Hermann is a seasoned writer with a passion for sharing knowledge and expertise with readers worldwide. With a keen interest in canine breeds, Maxine has established herself as a go-to authority on Hungarian dog breeds and their characteristics. Her articles offer a unique blend of informative content and engaging storytelling, making complex topics accessible to readers of all levels.

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