Ruby tetras are petite freshwater fish, typically reaching a maximum size of 2 centimeters (approximately 0.8 inches). Their small stature makes them an ideal choice for nano aquariums and community tanks with other similarly sized, peaceful fish.
Understanding the Ruby Tetra's Size and Habitat
Despite their vibrant coloration, Ruby Tetras (Axelrodia riesei) remain quite small throughout their lives, contributing to their delicate appearance. Their compact size influences the type of aquarium they thrive in and the tank mates they can coexist with peacefully.
Here's a quick overview of their key characteristics:
| Characteristic | Detail |
|---|---|
| Maximum Size | 2 cm (0.8 inches) |
| Temperature | 20-26°C (68-79°F) |
| Water Parameters | Soft and acidic (pH: 4.5-6.5, dH: up to 8 degrees) |
| Compatibility | Community (peaceful with other small, non-aggressive species) |
| Care Tip | Peat filtration is suggested to maintain ideal water conditions. |
Ideal Tank Setup for Ruby Tetras
Given their small size, Ruby Tetras thrive in well-maintained aquariums that replicate their natural soft and acidic water environments.
- Tank Size: While small, they are schooling fish, so a minimum of a 10-gallon (38-liter) tank is often recommended for a group of 6-8 individuals to allow for adequate swimming space and reduce stress.
- Water Conditions: Maintaining specific water parameters is crucial for their health.
- pH: Keep the pH between 4.5 and 6.5.
- Hardness (dH): Ensure the water hardness is up to 8 degrees.
- Filtration: Using peat filtration can help achieve and maintain the soft, acidic water they prefer.
- Aquascaping: They appreciate a well-planted aquarium with plenty of hiding spots among live plants. Dark substrates and driftwood can also enhance their colors and make them feel more secure.
For more detailed information on their care, you can refer to resources like Maidenhead Aquatics on Ruby Tetra care.
