Colombian Tetra Care Guide: Silver Flash With Red Fins
The Colombian tetra (Hyphessobrycon columbianus) is a striking mid-sized tetra that combines a brilliant silver body with vivid red caudal and anal fins. Larger and bolder than most common tetras, it brings both colour and presence to community tanks. This Colombian tetra care guide from Gensou Aquascaping at 5 Everton Park covers everything from setup to schooling behaviour.
Colombian Tetra Overview
Colombian tetras originate from the Acandí River drainage in Colombia, near the border with Panama. They grow to 6–7 cm, making them one of the larger commonly available tetras. Males display a blue-silver iridescence on the body with deep red fins, while females are slightly duller and plumper. They live for three to five years and are active, confident schooling fish.
Tank Requirements
A school of eight to ten Colombian tetras needs at least a 120-litre tank. They are active swimmers that appreciate a long tank with open areas in the centre and planted sections along the sides and back. Maintain the temperature between 24 °C and 28 °C, pH 6.0–7.5 and GH 5–15 dGH. Moderate water flow mimics their natural river habitat and encourages tight schooling.
Diet and Feeding
Colombian tetras are unfussy omnivores with good appetites. Offer quality flake or pellet food as the staple, supplemented with frozen bloodworm, brine shrimp and daphnia. They feed enthusiastically at all levels of the tank. Feed twice daily in amounts consumed within two minutes. Their hearty appetite means they can outcompete slower feeders — watch shy tank mates during feeding time.
Tank Mates
Colombian tetras are generally peaceful but can be mildly nippy, especially in small groups. Keep them in schools of eight or more to minimise fin-nipping. Suitable tank mates include other medium-sized tetras, barbs, rainbowfish, Corydoras, larger rasboras and non-aggressive cichlids like keyhole cichlids and Bolivian rams. Avoid slow-moving, long-finned species like bettas and fancy guppies, which may be targets for nipping.
Aquascaping
Their silver and red colouration looks spectacular against a densely planted background. Use dark substrate to enhance their colours. Tall background plants like Vallisneria and Hygrophila create a natural backdrop, while open foreground space allows the school to display its coordinated swimming. Driftwood and rocks add structure without impeding their active swimming style.
Breeding
Colombian tetras are egg scatterers that breed readily in aquariums. Condition pairs with high-protein foods, then transfer them to a breeding tank with fine-leaved plants or spawning mops. They scatter eggs among vegetation, typically at dawn. Remove adults immediately after spawning as they will eat the eggs. Fry hatch in 24–36 hours and eat infusoria followed by baby brine shrimp once free-swimming.
Common Health Issues
Colombian tetras are robust and resistant to most common diseases. Ich may occur after temperature drops or shipping stress. Neon tetra disease (NTD) can rarely affect them, showing as pale patches and erratic swimming — there is no cure, and affected fish should be removed to prevent spread. Overall, they are hardy fish that thrive with basic good care and consistent water quality.
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