Tetras are one of the most popular freshwater aquarium fish, known for their small size, peaceful temperament, and vibrant colors. They belong to the family Characidae and are native to South America and Africa, often found in rivers, streams, and blackwater habitats.
Key Features of Tetras:
- Size: Usually 1–2 inches (some species may grow slightly larger).
- Lifespan: 3–5 years on average with proper care.
- Temperament: Peaceful, social, and best kept in schools (groups of 6 or more).
- Tank Size: A minimum of 10–20 gallons depending on the species.
- Water Conditions:
- Temperature: 22–28°C (72–82°F)
- pH: 6.0–7.5 (slightly acidic to neutral)
- Soft to moderately hard water
Popular Types of Tetras:
- Neon Tetra – small, bright blue with a red stripe; very popular beginner fish.
- Cardinal Tetra – similar to neon but with a longer red stripe.
- Glowlight Tetra – translucent with a glowing orange line.
- Black Skirt Tetra – larger, with flowing fins and black body.
- Ember Tetra – tiny, fiery orange fish perfect for nano tanks.
Care Tips:
- Keep them in groups to reduce stress and encourage natural schooling behavior.
- Provide plants and hiding spots but also leave open swimming space.
- Feed a varied diet: high-quality flakes, micro-pellets, and occasional live/frozen foods (like brine shrimp or daphnia).
- Avoid aggressive tank mates—best companions are other peaceful community fish.