03 9354 5843


Very popular aquarium fish because of their brilliant blue and red colouring, Cardinals look best as a school in a planted tank. Sometimes sensitive, but usually quite hardy once they're settled. Difficult to breed. Most of the fishes in the trade are wild caught or bred in Indonesia. Coburg Aquarium, specialised in different species of live fish.


Features of Cardinal Tetra:

  • A brilliant neon blue stripe running from the nose to the tail. Below this blue stripe is a brilliant red stripe
  • They are peaceful fish and can be kept with other aquarium fish
  • Average Lifespan : 5 yrs

The Best Aquarium Size for Tetras:

You need a minimum tank size of 30L to keep a small group of Cardinal Tetras. You’ll likely need much larger tanks if you’re planning on introducing some tank mates. These fish are active swimmers, so you need to provide plenty of space to prevent overcrowding.

After an Aquarium for your fish? Browse our Aquarium Tank Selection here.

Tank Mate Compatibility:

A schooling fish by nature, the Cardinal Tetras are best kept in groups of at least six or more. They make an excellent community fish however they sometimes known to nip the fins of slower-moving fish, particularly those with long, flowing fins such as Bettas or Angelfish. Here’s a list of some of the best tank mates for your Tetras:

Feeding :

The cardinal tetra is an omnivorous species and will accept most foods: Flakes and small pellets. You can also feed them a mix of frozen foods including daphnia, baby brine, cyclops, and Bloodworms.

Tetra Tank Set-up:

Heater :

Ideal water temperatures sit between at a stable number between 23 ⁰C - 26 ⁰C
Looking for a Heater for your fish? Check all available Tank Heater here.

Light :

You can choose to use lighting in your aquarium if that’s what you prefer. Dim LED lighting would be ideal.

Substrate :

Gravel and Dark Color Substrates.A variety of Substrates are avalibale in Coburg Aquarium.

Plants for Tetras:

They are accustomed to medium to large plants in their natural habitat and enjoy a well-planted aquarium with some open swimming space.

Decorations for Tetras:

Artificial plants can work well. Additionally, you can also choose to use Aquarium Ornaments such as: Kazoo handmade fish decorations, caves, rocks, and maybe even driftwood will create a fun playground for them to swim around.

Additional Information

Customer Reviews

Based on 1 review Write a review

Other customers have purchased

Fish Keeping Snapshot :

Preferred Water Parameters :

Customer Reviews
5.0 Based on 1 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Lyn M.
Australia Australia

Love them!

Haha, I don't really use my fish but my experience with Cardinal tetras has me finding them to be a good fish to keep and definitely hardier than their neon tetra cousins.