The ruby tetra (Aphyocharax rathbuni) is an elegant, colorful schooling fish from South America, distinguished by its ruby-red coloration and transparent fins . In well-maintained aquariums, the males in particular display an intense red coloration, which gives the fish its name.

This lively yet peaceful tetra is ideal for planted community aquariums . In a school, it displays its full splendor, and its harmonious swimming behavior adds vibrant dynamism and natural aesthetics to the aquarium.

Characteristics & Attitude:

Size: 34 cm (L)
Origin: South America (Paraguay, Brazil)
Temperature: 22-28C
pH value: 6.07.5
Total hardness: up to 15 dGH
Social behavior: Peaceful schooling fish, from 810 individuals
Aquarium: From 80 liters, with dense marginal planting and free swimming space

Feeding:
Eats fine live, frozen, and dry food. A varied diet promotes color intensity and vitality.

Tip:
A dark substrate, slightly subdued light and good water quality bring out the ruby red coloration of the tetra particularly beautifully.

Conclusion:
The ruby tetra (Aphyocharax rathbuni) is a lively, peaceful schooling fish that enriches any community aquarium with its intense red coloration and elegant swimming behavior.