🐟 Congo Tetra (Phenacogrammus interruptus)
An Iridescent Rainbow of Blue, Green and Gold Scales • Flowing, Elegant Fins, Especially in Mature Males • One of the Largest Tetras in the Hobby
 
📋 The Congo Tetra is a large, strikingly iridescent tetra, with scales that shift through blue, green, and gold depending on the angle of light, paired with long, flowing fins that become especially elegant in mature males.
It comes from the Congo River Basin in the Democratic Republic of Congo, naturally schooling in open water over soft, slightly acidic streams and tributaries. Every Congo Tetra we ship is feeding well.
This is one of the largest tetras commonly kept in the hobby, and a real schooling centrepiece in a larger planted tank, best displayed in a group of 8 or more against dim lighting and dark substrate, which both help bring out its full iridescent colour. Males develop longer fins and stronger colour than females as they mature. It reaches up to 9cm, so a 120L tank suits a school well.
 
💡 Highlights
🌈 Iridescent Rainbow Scales: Shifts through blue, green, and gold in the light
🪶 Flowing Fins: Especially elegant in mature males
📏 One of the Largest Tetras: A real schooling centrepiece
👥 Best in a Real Group: 8 or more for natural behaviour and colour
🌿 Planted Tank Favourite: Shows its best colour against dim lighting and dark substrate