Cardinal Tetra Care & Compatibility
Paracheirodon axelrodi
Like a neon but with red running the full length of the body. Prefers soft, warm, slightly acidic water.
Min 20 gal 2" adult Peaceful Moderate care 73-81°F
Care requirements
| Scientific name | Paracheirodon axelrodi |
|---|---|
| Group | Tetra |
| Adult size | 2 in (5.1 cm) |
| Minimum tank | 20 gallons |
| Temperature | 73-81°F |
| pH | 5.5-7 |
| Hardness | 1-8 dGH |
| Temperament | Peaceful |
| Social | Schooling (keep 6+) |
| Diet | Omnivore |
| Swim level | Mid |
| Care level | Moderate |
| Lifespan | ~5 years |
Best tankmates for Cardinal Tetra
Neon Tetra
Ok · 20 gal+
Guppy
Ok · 20 gal+
Endler's Livebearer
Ok · 20 gal+
Platy
Ok · 20 gal+
Swordtail
Ok · 20 gal+
Dwarf Gourami
Ok · 20 gal+
Pearl Gourami
Ok · 30 gal+
Honey Gourami
Ok · 20 gal+
German Blue Ram
Ok · 20 gal+
Bolivian Ram
Ok · 20 gal+
Avoid keeping with
Discus
Not recommended
White Cloud Mountain Minnow
Not recommended
Frequently asked questions
What size tank does a Cardinal Tetra need?
A Cardinal Tetra needs a minimum of 20 gallons. Because it is a schooling fish, keep a group of at least 6, which may require more space.
Is the Cardinal Tetra good for beginners?
The Cardinal Tetra is rated moderate to care for. It suits keepers with a little experience and a stable, cycled tank.
What water parameters does a Cardinal Tetra need?
Keep Cardinal Tetra at 73-81°F, pH 5.5-7, and hardness 1-8 dGH.
How many Cardinal Tetra should I keep together?
Keep at least 6 together — they are happier and less stressed in a group.