Phenacogrammus interruptus (Congo Tetra) — 4–5 cm

Overview

The Congo Tetra (Phenacogrammus interruptus) is a stunning freshwater species native to the Congo River Basin in Central Africa. Renowned for its iridescent coloration and elegant fin extensions, it is a popular choice among aquarists seeking a peaceful and visually striking addition to their community tanks.

Key Features

• Size: 4–5 cm (juvenile to sub-adult)

• Origin: Congo River Basin, Central Africa

• Temperament: Peaceful; best kept in schools

• Lifespan: Up to 10 years with proper care

• Diet: Omnivorous; accepts a variety of foods including flakes, pellets, and live or frozen foods

Tank Requirements

• Minimum Tank Size: 30 gallons for a small group

• Water Parameters:

  • Temperature: 24–28°C (75–82°F)

  • pH: 6.0–7.5

  • Hardness: Soft to moderately hard

• Filtration: Moderate; maintain pristine water quality

• Tank Setup: Provide ample swimming space with plants and driftwood; dark substrate enhances coloration

Social Behavior & Compatibility

• Group Dynamics: Prefers to be kept in groups of at least 6 individuals to reduce stress and promote natural behaviors

• Tankmates: Compatible with other peaceful, non-aggressive species; avoid housing with fin-nipping species

• Breeding: Egg scatterer; requires a separate breeding tank with fine-leaved plants for egg attachment