Cardinal tetra

Paracheirodon axelrodi

Family : Characidae

FishFreshwatercharacids

The cardinal tetra resembles the neon tetra but its red stripe runs the entire length of the body, making it even more colorful.

Cardinal tetra — photo 1 sur 4
Paolo Neo · Wikimedia Commons · Public domain1 / 4
Popularity
Community fish
classic in freshwater aquarium
Availability
Common in shops
Shop availability
IUCN Status
LC
Least Concern
Biotope
Amazon+1
Bassin amazonien : eaux douces chaudes, acides, noires ou claires.

Description

The cardinal tetra reaches up to 5 cm. Its red stripe runs from eye to tail, while the blue stripe is shorter. It is hardier than the neon tetra. A schooling, peaceful and very active fish. It prefers acidic and dark waters. In the aquarium, it is sensitive to sudden parameter changes.

Habitat

Region :

The cardinal tetra lives in black, acidic waters of the Orinoco and Rio Negro tributaries. These waters are very dark due to tannins, with very low pH and near-zero hardness. The bottom is covered with leaves and wood.

Distribution :

Recommended parameters

Temperature2430 °C
pH56.5
GH14 °dGH
KH13 °dKH
NO₃
≤ 10 mg/L
PO₄
≤ 0.2 mg/L

Care

Difficulty
3/5
Diet
Omnivore
Min. tank
80 L
Min. group
10
Adult size
5 cm
Lifespan
5 years
Temperament
Peaceful
Propagation
Ovipare, ponte en eau très acide. Les œufs sont pondus parmi les plantes. Les parents ne s'occupent pas des œufs.

Care notes

Temperature 24–30°C, pH 5.0–6.5, very low hardness. A minimum 80-liter tank for a school of 10. Peat filtration helps maintain acidity. Dim lighting and floating plants are appreciated. Diet: small live or frozen foods, fine flakes. Compatible with other small peaceful characins. Avoid overly active tankmates.

Similar species

Espèces proches, même habitat ou même maintenance

References