Black Neon Tetra 3-3.5cm
Black Neon Tetra 3-3.5cm are peaceful, schooling tetras with a bold black stripe and bright neon line that really pops in a planted community aquarium. These Black Neon Tetras are around 3–3.5cm and look best kept in a group, making them ideal for peaceful, well‑filtered community tanks.
Appearance and Size
- Species: Black Neon Tetra (Hyphessobrycon herbertaxelrodi)
- Colour: black horizontal stripe with a bright, neon‑like line above and a subtle orange tint near the eye
- Size at sale: approximately 3–3.5cm
- Adult size: stays small, ideal for community tanks
Tank Requirements for Black Neon Tetra 3-3.5cm
- Tank size: from at least 2ft+ for a small group, larger is better for bigger shoals
- Décor: planted tanks with open swimming space and some shaded areas
- Filtration: gentle to moderate flow with good biological filtration
- Substrate: sand or fine gravel, with plants, wood and leaf litter for a natural look
Water Parameters (Guide Only)
- Temperature: around 23–27°C
- pH: roughly 6.0–7.5
- Hardness: soft to moderately hard water
- Ammonia & Nitrite: 0 ppm
- Nitrate: kept low with regular water changes
Feeding Black Neon Tetra
- Quality micro pellets or fine flakes designed for small tropical fish
- Frozen or live foods such as baby brine shrimp, daphnia and finely chopped bloodworms
- Occasional vegetable‑based or spirulina‑rich foods
Behaviour and Tank Mates
- Behaviour: active mid‑water swimmers that feel safest in a group
- Temperament: peaceful, ideal for calm community setups
- Best kept: in shoals of at least 6–8 Black Neon Tetras
Important Notes
- Always introduce Black Neon Tetra 3-3.5cm to a mature, cycled aquarium.
- Keep them in groups for best colour, confidence and natural schooling behaviour.
- Regular maintenance and good filtration help keep this species healthy long‑term.
Black Neon Tetra 3-3.5cm



