Bloodfin tetra - Aphyocharax alburnus

Scientific name: Aphyocharax alburnus

Common name: Bloodfin tetra

Family: Characidae

Usual size in fish tanks: 6 - 8 cm (2.36 - 3.15 inch)

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Recommended pH range for the species: 6.5 - 7.5

Recommended water hardness (dGH): 8 - 18°N (142.86 - 321.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 20 - 28 °C (68 - 82.4°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: peaceful

Temperament toward other fish species: peaceful

Usual place in the tank: Bottom levels

Natural Habitat

The Bloodfin Tetra, Aphyocharax alburnus, is native to South America. You can find this species in various regions, including Brazil, Paraguay, and Argentina. They thrive in slow-moving rivers and streams with plenty of vegetation.

Diet and Feeding

Bloodfin Tetras are omnivores. In their natural environment, they consume a diet of crustaceans and insect larvae. In captivity, they should be fed a varied diet consisting of high-quality flake and pellet foods. Supplement their diet with live foods, such as bloodworms and brine shrimp, 2-3 times a week to ensure optimal health and coloration. Regular feeding of a well-balanced diet will help maintain their vibrant colors and overall well-being.

Identifying Males and Females

In Bloodfin Tetras, males are generally more colorful and display a more pronounced hooked shape to their anal fin. Females, on the other hand, tend to have a fuller and rounder body shape, especially when carrying eggs. The difference in coloration and body shape can help in distinguishing between the sexes.

Breeding Information

Breeding Bloodfin Tetras is relatively straightforward. They often form pairs and breed spontaneously, even in a community tank. To set up a breeding environment, provide plenty of broad-leaved plants or a spawning mop where the eggs can be dispersed. The female will scatter the eggs throughout the tank, sometimes even jumping out of the water to do so. Since Bloodfin Tetras lack parental care, it’s crucial to remove the adult fish after spawning to prevent them from eating the eggs or fry. Adding glass beads or marbles to the substrate can help protect the eggs by providing a safe space underneath.

Longevity

With proper care, Bloodfin Tetras can live up to 10 years in captivity. Maintaining excellent water quality and providing a suitable diet are key factors in ensuring a long and healthy life for these fish.

Overview

Aphyocharax alburnus is best kept in groups of at least 6 individuals, as they are natural shoalers. When kept in small numbers, they can become shy and may hide frequently. Bloodfin Tetras are easy to care for and thrive in a well-maintained aquarium. They are peaceful fish and make an excellent addition to a community tank, provided that water conditions are kept optimal.