facts about this colorful species:
The cardinal tetra is scientifically known as Paracheirodon axelrodi.
It is a small fish that typically grows to about 1.5 inches (4 cm) in length.
The cardinal tetra is known for its bright blue and red coloration.
It is a schooling fish and should be kept in groups of at least six to eight individuals.
The cardinal tetra is a peaceful fish that can be kept with other small, non-aggressive species.
It prefers soft, acidic water with a pH between 5.0 and 7.0.
The cardinal tetra is a relatively hardy fish that can tolerate a range of water conditions, but it is sensitive to sudden changes in water parameters.
In the wild, the cardinal tetra inhabits slow-moving tributaries and flooded forests in the Amazon Basin.
It is an omnivorous species that feeds on small invertebrates and plant matter in the wild.
The cardinal tetra is a popular species among aquarium hobbyists due to its striking coloration and peaceful temperament.
It is a relatively easy fish to care for, but requires a well-established and well-maintained aquarium with appropriate water conditions and a varied diet.
The cardinal tetra has a lifespan of about two to three years in captivity.
Breeding cardinal tetras can be challenging, as they require specific water conditions and are sensitive to changes in water parameters.
The eggs of the cardinal tetra are adhesive and will attach to plants or other surfaces in the aquarium.
The larvae of the cardinal tetra are very small and require specialized care to survive.
The cardinal tetra is sometimes confused with the neon tetra (Paracheirodon innesi), but can be distinguished by the red stripe that runs the length of its body.
The cardinal tetra is a popular subject for aquascaping and planted aquariums, as its vibrant coloration can provide a striking contrast against greenery.
It is an active swimmer and requires plenty of swimming space in the aquarium.
The cardinal tetra is generally not aggressive towards other fish, but may become stressed if kept with larger or more aggressive species.
The cardinal tetra is not listed as a threatened species, but is subject to habitat loss and over-collection in the wild.
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