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Buenos Aires Tetra is a hardy, fast-swimming freshwater fish with silver bodies and red accents, perfect for active aquariums and beginner-friendly setups.

Buenos Aires Tetra – Detailed Product Description

• Overview & Appearance
  The Buenos Aires Tetra (Hyphessobrycon anisitsi) is a robust and energetic freshwater fish known for its sleek silver body and striking red highlights on the fins, especially the caudal (tail) and anal fins. Some individuals also display subtle iridescent tones and a faint lateral line that reflects light beautifully. Their strong, streamlined body shape makes them fast swimmers, adding constant motion and liveliness to the aquarium. Compared to other tetras, they are slightly larger and more durable, making them a popular choice among both beginners and experienced aquarists.

• Tank Size & Setup
  Due to their active nature, Buenos Aires Tetras require a spacious aquarium. A minimum tank size of 20 gallons is recommended, though 30 gallons or more is ideal for a proper school. They should be kept in groups of at least 6–8 individuals to reduce aggression and encourage natural schooling behavior.
  Ideal tank setup includes:

  • Open swimming areas for active movement

  • Hardy plants or artificial plants (they may nibble on soft plants)

  • Driftwood or rocks for structure

  • Moderate lighting

Because they are known to occasionally nip or eat delicate plants, choose tough species like Anubias or Java fern.

• Water Conditions
  Buenos Aires Tetras are highly adaptable and tolerant of a wide range of water conditions:

  • Temperature: 18°C – 28°C (64°F – 82°F)

  • pH Level: 6.0 – 8.0 (wide tolerance)

  • Water Hardness: 5 – 20 dGH (soft to hard water)

  • Filtration: Moderate to strong flow is acceptable

  • Water Changes: Weekly 20–30% water changes recommended

Their resilience makes them forgiving for beginner aquarists.

• Behavior & Temperament
  These tetras are semi-aggressive and very active. While they are generally peaceful in a proper school, they are known for fin-nipping behavior, especially if kept in small groups or with slow-moving tank mates. They are constantly on the move and prefer the mid to upper levels of the tank. Their energetic personality makes them ideal for aquariums focused on active fish species.

• Tank Mates
  Tank mate selection is important due to their nippy tendencies:

  • Suitable tank mates:

    • Other robust tetras

    • Barbs

    • Danios

    • Larger, fast-moving fish

  • Avoid:

    • Long-finned fish (bettas, angelfish, fancy guppies)

    • Very small or delicate species

    • Slow-moving fish

A species-only tank or a community of similarly active fish works best.

• Feeding Habits
  Buenos Aires Tetras are omnivorous and not picky eaters:

  • Staple Diet: High-quality flakes or pellets

  • Protein Foods: Bloodworms, brine shrimp, daphnia

  • Plant Matter: They will also consume plant material and algae

Feed 1–2 times daily in moderate portions. Their strong appetite means care should be taken to avoid overfeeding.

• Care & Maintenance
  These fish are low-maintenance and ideal for beginners:

  • Maintain stable water parameters

  • Provide ample swimming space

  • Monitor for fin-nipping behavior

  • Perform regular water changes

They are hardy but still benefit from good water quality and proper care.

• Breeding Information
  Buenos Aires Tetras are egg scatterers and relatively easy to breed compared to other tetra species. A separate breeding tank with slightly warmer water can help trigger spawning. Provide fine-leaved plants or spawning mops. After spawning, remove the adults to prevent egg predation. Eggs typically hatch within 24–36 hours, and fry can be fed infusoria followed by baby brine shrimp.

• Why Choose Buenos Aires Tetra?
  The Buenos Aires Tetra is an excellent choice for aquarists looking for a hardy, active, and visually appealing fish. Its silver body with red accents, energetic swimming behavior, and adaptability make it a standout in lively community tanks. Perfect for beginners, it offers durability without sacrificing beauty, bringing energy and motion to any aquarium setup.