Firefin tetra - Hyphessobrycon igneus

Scientific name: Hyphessobrycon igneus

Common name: Firefin tetra

Family: Characidae

Usual size in fish tanks: 3 - 5 cm (1.18 - 1.97 inch)

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Recommended pH range for the species: 6.7 - 7.4

Recommended water hardness (dGH): 3 - 15°N (53.57 - 267.86ppm)

0°C 32°F30°C 86°F

Recommended temperature: 21 - 24 °C (69.8 - 75.2°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: Top levels

Food and Feeding

Firefin Tetras are not particularly fussy eaters and will readily accept most foods offered in the aquarium. For optimal health and coloration, provide them with a high-quality flake or pellet as their staple diet. To enhance their diet, supplement with small live or frozen foods such as daphnia, micro worms, and brine shrimp. These protein-rich foods not only improve their overall health but also bring out their vibrant colors. Feeding small amounts twice a day is recommended to avoid overfeeding and maintain water quality.

Origin

Firefin Tetras are native to South America, specifically found in the Rio Paraná basin in Argentina. Their natural habitat consists of slow-moving streams and tributaries with plenty of vegetation and shaded areas. These environments typically have a soft, slightly acidic water composition, filled with tannins from decaying plant matter and submerged wood. Understanding their natural habitat helps in recreating similar conditions in the home aquarium to keep these tetras thriving.

Sexing

Sexing Firefin Tetras can be relatively straightforward. Females tend to have a stockier body, especially noticeable when they are carrying eggs. In contrast, males are generally slimmer and more vibrantly colored, particularly during the breeding season. Observing the body shape and coloration closely will help distinguish between the sexes.

Breeding

There are currently no reported cases of Firefin Tetras breeding in home aquariums, but understanding their natural breeding behavior can help aquarists attempt to replicate these conditions. In the wild, they are egg scatterers, releasing their eggs among dense foliage and leaving them to hatch without further parental care. If attempting to breed these tetras, setting up a separate breeding tank with plenty of fine-leaved plants or a spawning mop can provide a suitable environment. Soft, slightly acidic water with a temperature around 26°C (78°F) may increase the chances of successful spawning.

Lifespan

With proper care, Firefin Tetras can live up to 5 years in captivity. Maintaining stable water conditions, providing a varied diet, and avoiding stress from aggressive tank mates are key factors in ensuring they reach their full lifespan. Regular water changes and monitoring water quality will also contribute to their overall health and longevity.

Tank Setup and Environment

To create a suitable habitat for Firefin Tetras, aim for a well-planted aquarium with subdued lighting. They thrive in tanks that mimic their natural environment, which includes dimly lit waters with plenty of hiding spots among plants and driftwood. Using plants like Java Fern, Anubias, and Amazon Swords can provide cover and create a sense of security for these tetras.

Adding pieces of bogwood or driftwood to the tank will not only serve as hiding places but will also release tannins, staining the water and creating a more natural, slightly acidic environment. Aim for a tank size of at least 60 liters (15 gallons) for a small group of six tetras, ensuring there is ample swimming space and places to retreat.

Compatibility and Tankmates

Firefin Tetras are peaceful and social fish, best kept in groups of at least six individuals. They make excellent community fish when housed with other peaceful species. Ideal tank mates include small tetras like Neon Tetras, Ember Tetras, and other peaceful fish such as Corydoras catfish and small rasboras. They can also serve as dither fish for non-aggressive cichlids, helping to bring out the shy cichlids without causing stress.

Avoid keeping Firefin Tetras with large, aggressive, or overly active fish, as they can easily become stressed. Species like Tiger Barbs or larger cichlids may not be suitable tank mates due to their more boisterous nature.

Short Description

Hyphessobrycon igneus, commonly known as Firefin Tetras, are a peaceful, shoaling species that thrive in well-planted aquariums with subdued lighting. They prefer tannin-rich water with plenty of hiding places, making them an ideal choice for aquarists looking to create a natural, South American-themed setup. Due to their gentle nature, they should be kept with other non-aggressive tank mates to avoid stress. When provided with the right environment and care, they make an attractive and active addition to a community tank.