Freshwater species
Cardinal Tetra
Paracheirodon axelrodi
A peaceful schooling tetra known for its bright blue stripe and full-length red coloration. Cardinals do best in an established aquarium with stable water and a proper school.
Currently listed on New Fish Day
Cardinal Tetra appears on the current New Fish Arrivals list. Availability changes as livestock sells.
Check New Fish ArrivalsQuick Care Information
- Adult size
- About 2 inches
- Temperature
- 73–81°F
- pH
- 5.0–7.0
- Minimum aquarium
- 20-gallon long
- Temperament
- Peaceful schooling fish
- Group
- 8–10 or more
Before You Bring Them Home
Use these numbers as a starting point, not as a substitute for evaluating the whole aquarium. Tank dimensions, filtration, water stability, existing livestock, adult size, and behavior all matter when choosing fish or shrimp.
Read the Full Cardinal Tetra Care Guide
Browse freshwater fish groups or contact Fins For Grins with questions about your setup.