Buenos Aires Tetra

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Buenos Aires Tetra


The Buenos Aires Tetra is widespread in blackwater and Clearwater rivers and streams in South America.


Up to 6cm.

Aquarium Size:

180 litres/40 gallons

Preferred water conditions:

  • Temp: 18-24°C
  • pH: 6 – 7
  • Hardness: Soft


Buenos Aires Tetra are omnivorous and will readily accept flake or small pellet foods. They will also appreciate more meaty treats such as daphnia and brine shrimp.

A varied diet should give optimum colour and health.


Buenos Aires Tetra are schooling fish and are best kept in larger groups in order to bring out the most natural behaviour. The Buenos Aires Tetra is peaceful and makes a great addition to the community aquarium. It is best housed with similar sized fish of a peaceful disposition.

If kept in small numbers these fish can become nervous and may nip the fins of other fish.


Females appear rounder than males and grow larger. Males remain slender and show brighter colouration.


Buenos Aires Tetra will readily breed in the correct conditions. Spawning occurs in plants or a spawning mop, the female will scatter eggs and the male will fertilise them. Eggs are best separated from the parents as they are likely to eat them.

Search our posts for Neon tetra breeding for a full guide (The process is very similar).


Buenos Aires Tetra do require a larger aquarium as they are best kept in schools. 8 fish should be considered an absolute minimum but to witness their true behaviour more are needed, numbers of 12+ will help them to feel most secure.



For more fishy profiles, check out the rest of our Knowedge Base.

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