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The Red Ruby Tetra is a peaceful & hardy shoaling species and enjoys a planted aquarium in groups of 6 or more. Suited to beginner aquarists this energetic fish adds a pop of colour to your aquarium. They make excellent fish for nano and small fish tanks.

Not as wide spread as other tetra's, Red Ruby Tetra's are native to the upper part of Rio Meta in Colombia. 


Features of Red Ruby Tetra's:

  • Red to orange body with black spot at the base of a forked tail
  • Males & females are almost identical however males are slightly smaller
  • Transparent fins with fine blue streaks that shimmer in the light
  • Classic diamond shaped "tetra" body 
  • Energetic and active swimmers 
  • Grows up to 4cm

The Best Aquarium Size for Red Ruby Tetra's:

The minimum tank size for a small group of Red Ruby Tetra's is 25L. The Red Ruby Tetra will occupy the top to middle water column in the aquarium. They are active swimmers so if keeper a group larger than 6, opt for a larger aquarium.

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

Tank Mate Compatibility:

The Red Ruby Tetra is a shoaling fish and should be kept in schools of 6 or more. This species does well with other similarly sized and peaceful community fish.

Great tank mates for Red Ruby Tetra's include:

 Coburg Aquarium, specialize in a large range of species of live fish.

Feeding :

Red Ruby Tetra's are omnivores and should have a varied diet for optimal health. They will accept flakes and pellets, and their diet should be supplemented with spirulina, blackworms, bloodworms, brine shrimp, and daphnia. 

Check out our extensive range of aquarium fish foods.


Red Ruby Tetra Fish Tank Setup:

Aquarium Filtration

Naturally found in slow moving streams, mimic the Red Ruby Tetra's natural environment by using a good aquarium filter that won’t create strong water movements. They are a hardy species but must have stable and clean waters.

Browse aquarium filters here.


Aquatic Plants for Red Ruby Tetra's

The Red Ruby Tetra is naturally found black waters heavily vegetated with plenty of driftwood. It provides shade & spaces to hide to ensure happy fish. The following live aquatic plants will do better in low light aquariums.

Interested in live plants for your aquariums? Browse live plants here.

Tank Decorations for Red Ruby Tetra's

Red Ruby Tetra's enjoy black water aquariums and soft acidic water. The colour of fish are enhanced when conditions are ideal and fish are less stressed. Add driftwood and natural decorations that release tannins to mimic their natural environment. 

Check out our Aquarium Ornaments.

Substrate for Red Ruby Tetra's

Dark coloured substrates enhance the colour of the fish and help lower light levels, reducing stress. They prefer sandy substrates.

A variety of Substrates are available at Coburg Aquarium. 

Additional Information

Fish Keeping Snapshot :

Preferred Water Parameters :

Aquarium Set-up Service:

Our design team enables us to create the tank you desire, install your tank where you wish to and provide a maintenance service to ensure everything runs smoothly. We can create almost any aquarium from the small home aquarium to large commercial aquariums for offices, hotels or restaurants. Coburg Aquarium, Australia's leading aquarium shop.

Please contact us if you need any custom tank services.