01
Key Requirements
- Maintain stable water around 23–28 °C and use filtration appropriate to the exact species or variety.
- Keep water chemistry near 4.5–7.0 and avoid abrupt changes.
- 75 L / 20 gal+ for a proper school
- Diet: Omnivorous; small foods.
Tetra Fish
Cardinal Tetra
Cardinal Tetra are small schooling fish known for a strong red-and-blue body pattern. They are most impressive and secure when maintained as a proper group in a stable community aquarium.
Enquire for current availability
Tetra Fish
Quick Information
Cardinal Tetra at a Glance
Scientific nameParacheirodon axelrodi
TypeFreshwater schooling fish
Adult sizeAbout 4–5 cm
LifespanAbout 3–5 years
Temperature23–28 °C
pH4.5–7.0
DietOmnivorous; small foods
Recommended setup75 L / 20 gal+ for a proper school
Beginner-friendlywith a properly cycled, heated aquarium
Gentle water flowplus plants or smooth hiding places
Colour, fin type, sex, size and current stock can vary. Please contact Fishes Hub before ordering so we can confirm the available fish and suitable setup.
Product photography note: the gallery currently uses temporary reference images and will be replaced with species-specific photography.
Product Information
Know More About Cardinal Tetra
Cardinal Tetra are small schooling fish known for a strong red-and-blue body pattern. They are most impressive and secure when maintained as a proper group in a stable community aquarium.
Use gentle filtration, cover and consistent water quality. Offer small foods in controlled portions and keep the school large enough to support natural schooling behaviour.
Avoid large or predatory tank mates that can treat small tetras as prey. Confirm the current Cardinal Tetra size and availability with Fishes Hub.
Plan the aquarium around Cardinal Tetra’s adult size, water parameters, behaviour and social needs. Use the quick points below to prepare a stable, low-stress setup.
Make a Confident Choice
A healthy Cardinal Tetra starts with the right environment, sensible feeding and careful decisions about stocking. Use these quick points to prepare a suitable setup before bringing one home.
Quick Facts
About 4–5 cmAdult size
23–28 °CTemperature
4.5–7.0pH
Easy–ModerateCare level
02
Care & Maintenance
- Recommended setup: 75 L / 20 gal+ for a proper school.
- Group/social needs: 8–10+ fish recommended.
- Monitor appetite, waste and behaviour as part of routine care.
- Perform regular partial water changes and maintain appropriate filtration.
03
Compatibility & Placement
- Temperament: Peaceful schooling fish.
- Compatibility: Excellent for peaceful community aquariums with suitably sized tank mates.
- Provide swimming space and hiding/cover appropriate to the species.
- Do not mix fish solely by appearance; match temperature, adult size and behaviour.
04
Why Choose Cardinal Tetra?
- Type: Freshwater schooling fish.
- Adult size: About 4–5 cm.
- Lifespan: About 3–5 years.
- Care level: Easy–Moderate.
05
Before You Buy
- Confirm the current variety/species, size and availability with Fishes Hub.
- Prepare the aquarium before introducing fish and confirm it is suitable for the exact species.
- Plan tank mates carefully around temperament, size and compatibility.
- Ask Fishes Hub for current livestock availability and setup guidance.
Need Help Choosing?
Let's Find the Right Cardinal Tetra for You.
Ask us about current Cardinal Tetra availability, size, compatibility and the right aquarium or pond setup.