Tetras are among the most popular freshwater aquarium fish, known for their vibrant colors and peaceful nature. These small fish thrive in slightly alkaline water, making them ideal for beginner aquarists.
Ideal Water Conditions for Tetras
To keep tetras healthy and stress-free, maintain the following water parameters:
- pH level: Between 6.8 and 7.8
- Alkalinity: Between 3 and 8 dKH
Tetras adapt well to 10- to 20-gallon aquariums, but larger tanks are recommended. Bigger environments reduce stress, enhance coloration, and simplify maintenance.
Lifespan and Tank Setup
Most tetra species live between 5 and 6 years. They prefer spacious tanks with gentle filtration and stable water conditions. Their calm temperament makes them ideal for community aquariums with other peaceful fish.
Popular Tetra Species
Green Neon Tetra
The Green Neon Tetra resembles the Neon and Cardinal Tetras but has a subtle green belly that sets it apart. Its body length is around 1.5 inches, and it thrives in planted tanks with soft lighting.
Blue Tetra
Native to the Amazon River, the Blue Tetra features a deep blue or purple body with a darker central stripe. Under proper lighting, it reflects a stunning rainbow shimmer. It grows up to 2.3 inches and lives around 3.5 years in optimal conditions.
Emperor Tetra
Add a touch of royalty to your tank! The Emperor Tetra, native to Colombia, is prized for its regal coloration and resilience. Males and females show distinct differences, adding visual interest. Average size: 1.5 inches.
Why Choose Tetras?
Tetras come in over 17 unique varieties, each with its own charm. Their hardiness, peaceful behavior, and vivid colors make them perfect for:
- Beginner aquarists
- Community tanks
- Nature-themed aquascapes
