Colombia Red Fin Tetra M – Active Colorful Schooling Fish

Colombia Red Fin Tetra M, commonly known as the Colombian Red Fin Tetra (Hyphessobrycon columbianus), is a lively and eye-catching species admired for its metallic blue-silver body paired with striking red fins. Native to Colombian river systems, this tetra is known for its active swimming and bold presence, making it a standout in medium to large aquariums.

The “M” size refers to medium-sized specimens, typically well-developed juveniles or sub-adults that already show strong coloration and active behavior. When kept in groups, they display dynamic schooling movement, creating energy and motion in the aquarium.

Compared to smaller tetras, Colombian Red Fin Tetras are slightly more robust and active, making them suitable for community tanks with similarly sized fish. Their vibrant coloration becomes more intense under good lighting and proper care.

Key Features

• Known as Colombian Red Fin Tetra (Hyphessobrycon columbianus)

• Metallic blue-silver body with bright red fins

• “M” size – medium, well-developed fish

• Active and energetic schooling species

• Ideal for planted and community aquariums

• Hardy and adaptable

Size

• Adult size: 6 – 7 cm

• “M” specimens are typically 4 – 5 cm

• Larger and more robust than most small tetras

Temperament

Colombia Red Fin Tetra M is semi-peaceful and active.

• Best kept in groups of 6–10 or more

• Can be slightly boisterous or nippy if kept in small groups

• Active mid-water swimmer

• Generally compatible with similar-sized fish

Water Conditions

Hardy but thrives in stable conditions.

• Temperature: 23 – 27°C (73 – 81°F)

• pH: 6.0 – 7.5

• GH: 5 – 15 dGH

• Ammonia/Nitrite: 0 ppm

• Nitrate: < 30 ppm

Perform 20–30% weekly water changes.

Tank Setup

Colombian Red Fin Tetras prefer aquariums with space to swim.

Recommended setup includes:

• Open swimming area (important due to activity level)

• Plants along edges and background

• Driftwood and natural décor

• Moderate water flow

• Secure lid (they may jump when startled)

Minimum tank size: 100 liters (~25 gallons).

Feeding Habits

Colombia Red Fin Tetra M are omnivores.

Diet can include:

• High-quality flakes or pellets

• Frozen foods (bloodworms, brine shrimp, daphnia)

• Live foods for color enhancement

Feed 1–2 times daily.

Tank Mates

Suitable for active community aquariums.

Suitable tank mates:

• Other medium-sized tetras

• Barbs (non-aggressive types)

• Corydoras

• Dwarf cichlids

• Gouramis

Tank mates to avoid:

• Very small or shy fish

• Long-finned slow fish (may nip fins)

• Aggressive predators

Care and Maintenance

To keep Colombia Red Fin Tetra M healthy:

• Keep in larger groups to reduce aggression

• Provide ample swimming space

• Maintain stable water parameters

• Perform regular water changes

• Feed a varied, high-quality diet

With proper care, they can live 5–7 years.

Why Choose Colombia Red Fin Tetra M?

• Vibrant red fins and metallic body

• Active and lively schooling fish

• Hardy and adaptable

• Ideal for medium to large community tanks

• Adds energy and movement to aquariums

Colombia Red Fin Tetra M is a bold and energetic species that brings color, activity, and presence to any aquarium. Its striking appearance and lively behavior make it a great choice for aquarists looking to create a dynamic and visually engaging tank. 🐟🔥🌿