Common Name(s)
Cardinal tetra
Scientific Name
Paracheirodon axelrodi
Family
Characidae
Origin
Upper Orinoco and Negro rivers in South America
Temperament
Peaceful
Maximum Size
2 inches
Minimum Tank Size
15/20 gallon with minimum base dimensions of 24 x 12
Tank Setup
Nothing in particular
Tank Region
Middle-top
Diet
Omnivore
Breeding
Egg-scatterer
Compatibility
With other temp-compatible community fish
Ease of Keeping
Intermediate
Care
pH: Doesn't matter; Temperature: 74-85 Fahrenheit
Cardinal tetra.JPG

Attribution, https://commons.wikimedia.org/w/index.php?curid=399384

Females get larger than males, and are more rounder-bodied.

They can live up to 5 years.

They are schooling fish, so need to be kept in groups of 6+ of their own species.