Tetra Cardinal XL
The Cardinal Tetra is a small, extremely popular and striking aquarium fish. It stands out for its bright blue iridescent stripe along its body, combined with a strong red line that extends from the midbody to the tail – unlike the similar Neon Tetra, whose red line stops in the middle.
Care tips:
Cardinal Tetras are sensitive to sudden water changes, so they need good quality and stability in parameters.
They love slightly peaty/dark water (blackwater), especially if they come from a wild collection.
They combine excellently with Corydoras, Otocinclus, Rasboras, and small shrimp.
Diet: Omnivorous
Ready to accept: Complete foods flakes or micro pellets, Frozen or live food (artemia, bloodworms, daphnia), Powder or microfood for small species.
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Family: Characidae
Origin: South America (Amazon – mainly in Brazil, Colombia, Venezuela)
Size: 3 – 5 cm
Lifespan: 3 – 5 years
Behavior: Peaceful, schooling fish
Suitable for: Community aquariums with small, non-aggressive species
Aquarium conditions:
Parameters:
Temperature: 23°C – 28°C
pH: 5.0 – 7.0 (prefers slightly acidic water)
Hardness: Soft to medium (1 – 8 dGH)
Aquarium size: 60 liters for a school
Number of fish: At least 6–10 (in a school)
Substrate: Dark, sandy or planted
Decoration: Plants, wood, roots, peaty environment
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