Colombian tetra - Hyphessobrycon columbianus

Scientific name: Hyphessobrycon columbianus

Common name: Colombian tetra

Family: Characidae

Usual size in fish tanks: 6 - 7 cm (2.36 - 2.76 inch)

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Recommended pH range for the species: 6.6 - 7.2

Recommended water hardness (dGH): 5 - 18°N (89.29 - 321.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 23 - 27 °C (73.4 - 80.6°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

Introduction

The Colombian Tetra (Hyphessobrycon columbianus) is a vibrant and hardy freshwater species native to the rivers of Colombia, South America. Known for its peaceful nature and striking colors, it is a popular choice among aquarists. These tetras thrive in community tanks, but it’s important to maintain them in small groups to prevent fin-nipping behavior. They are best suited for well-planted aquariums with plenty of swimming space.

Origin

Colombian Tetras are found in the rivers and streams of Colombia, specifically in the Río Acandí and Río Atrato basins. These waterways are characterized by slow-moving currents and dense vegetation, providing the tetras with plenty of cover and food sources.

Tank Setup

Colombian Tetras prefer a well-planted aquarium with ample open swimming areas. They thrive in tanks of at least 80 liters (20 gallons) or larger. A sandy substrate is ideal, along with decorations such as driftwood and rocks to create hiding spots. Use plants like Hornwort or Amazon Sword to provide them with cover. Keep the lighting moderate to mimic their natural habitat.

Water Parameters

pH: 6.6 - 7.2
Water Hardness (dGH): 5 - 18°N (89.29 - 321.43 ppm)
Temperature: 23 - 27°C (73.4 - 80.6°F)

Regular water changes are important to maintain water quality. Aim to change 25-30% of the tank water every week for smaller tanks. In larger tanks (200 liters or more, approximately 53 gallons), a smaller percentage of water (around 15-20%) can be changed weekly, as long as the tank is not overcrowded. This helps maintain stable water conditions without causing too much disruption. Ensure you use a good filtration system to keep the environment clean and stable for your fish.

Food and Feeding

Colombian Tetras are omnivores and are not picky eaters. In the aquarium, they will readily accept a wide variety of foods. Their staple diet should include high-quality flakes or granules. To keep them in optimal condition, supplement their diet with live or frozen foods such as brine shrimp, bloodworms, and white worms. Feeding a varied diet ensures vibrant colors and robust health.

Behavior and Temperament

Although generally peaceful, Colombian Tetras can exhibit fin-nipping behavior, particularly toward smaller or long-finned tank mates. To reduce aggression, keep them in groups of at least 6 to 8 individuals. They are schooling fish, and being in a group helps reduce their stress levels and prevents unwanted behaviors.

These tetras are active swimmers and typically occupy the top levels of the tank. They get along well with other peaceful species, but avoid keeping them with slow-moving or delicate fish that might become targets for fin-nipping.

Sexing

Sexing Colombian Tetras can be challenging, as males and females appear quite similar. However, during breeding season, females become noticeably rounder as they fill with eggs. Males may also display slightly more vibrant colors during this time.

Breeding

Breeding Colombian Tetras is possible in captivity with the right conditions. A separate breeding tank should be set up, with subdued lighting and soft, slightly acidic water. Add fine-leaved plants such as Java Moss or spawning mops to give the fish a place to deposit their eggs. Condition the parents by feeding them live or frozen foods for a week before breeding.

Once spawning is complete, remove the parents from the tank to prevent them from eating the eggs. The eggs typically hatch within 24-48 hours, and the fry will become free-swimming after about 3-5 days. At this stage, they can be fed infusoria or liquid fry food until they are large enough to eat finely crushed flakes or baby brine shrimp.

Lifespan

With proper care, Colombian Tetras can live for 3 to 5 years in a well-maintained aquarium. Providing a clean environment and a balanced diet is essential for maximizing their lifespan.

Suitable Tank Mates

Colombian Tetras are best kept with other peaceful community fish. Fast-moving fish like danios or rasboras make excellent tank mates, as they are less likely to be bothered by the tetras’ occasional fin-nipping behavior.

Short Description

The Colombian Tetra is a hardy and colorful fish that brings activity and life to any community tank. Although they can be a little nippy at times, keeping them in groups and providing a well-planted environment helps minimize aggression. Their stunning metallic blue body and red fins make them a standout addition to any aquarium. They are easy to care for, making them suitable for both beginner and experienced aquarists alike.

Final Thoughts

Colombian Tetras are a lively and attractive species that make a great addition to community aquariums. Their relatively easy care requirements, combined with their vivid coloration, make them popular among aquarists. By providing a spacious tank, maintaining high water quality, and feeding them a varied diet, your Colombian Tetras will thrive for years to come.