Species Profile
Cardinal Tetra
Paracheirodon axelrodi
Tetraspeaceful
Adult size
2″
Minimum tank
20 gal
Temperature
73–81°F
pH
4.5–7
Schooling
Group of 6+
Water level
mid
Diet
Flake, micro pellets
Notes
Vibrant Amazon blackwater tetra, brighter than the neon and with red running the full length of the body. Wants soft, warm (78-82°F), slightly acidic water. Keep 8+ for a tight school; fewer and the color fades.
Photo: User:Lerdsuwa / Wikimedia Commons · Source · CC-BY-SA-3.0