Buenos Aires Tetra (Hyphessobrycon anisitsi)

The Buenos Aires Tetra is a robust, energetic freshwater fish well known for its shimmering silver body, bright red fins, and active schooling behaviour. Native to the rivers and streams of Argentina, Brazil, and Paraguay, this species is built for movement and thrives in larger, open aquariums.

Unlike more delicate tetra species, Buenos Aires Tetras are hardy and adaptable, making them a great option for aquarists looking for an active, eye-catching fish that can handle a wider range of water conditions. They are best suited for community tanks with similarly sized, fast-moving fish.

At FintasticFish.ca, Buenos Aires Tetras are a popular choice for aquarists who want bold activity, durability, and striking contrast in their aquarium setup.

Buenos Aires Tetras are active swimmers that do best in spacious tanks with plenty of room to school and explore. They are highly social and should always be kept in groups to reduce stress and encourage natural behaviour.

Quick Facts

• Very active and fast-moving species
• Suitable for larger community aquariums
• Can nip at soft plants (choose hardy plants if aquascaped)
• Scientific Name: Hyphessobrycon anisitsi
• Common Name: Buenos Aires Tetra
• Origin: Argentina, Brazil, Paraguay (South America)
• Adult Size: Up to 7 cm (2.75 inches)
• Temperament: Semi-peaceful, active schooling fish
• Tank Level: Mid-water swimmer
• Minimum Tank Size: 20+ gallons (larger recommended for schools)
• Water Temperature: 18–28°C
• pH: 6.0–8.0
• Diet: Omnivore (flakes, pellets, frozen/live foods, some plant matter)
• Care Level: Easy
• School Size: 6–10+ recommended