Origin Colombia (San Juan and Atrato River basins) Adult Size 4–5 cm (1.5–2 in) Recommended Tank Size 60 L (15 gal) or larger Temperature 23–28°C (73–82°F) pH 5.5–7.5 Behavior Peaceful • Schooling • Active Best kept in groups of 6 or more. Males may display mild territorial behavior toward one another, especially during courtship, but serious aggression is uncommon. Diet Omnivore Readily accepts: Quality flakes and pellets Frozen foods Live foods Daphnia Baby brine shrimp Bloodworms Did You Know? Male Emperor Tetras develop elongated tail filaments and can change the color of their eyes from blue to green depending on their mood, social interactions, and lighting conditions. Ideal Water Parameters GH: 2–12 KH: 1–6 Flow: Low to moderate Planted Aquarium: Recommended Group Size: 6+ individuals Compatibility ✅ Corydoras✅ Rasboras✅ Dwarf Cichlids✅ Hatchetfish✅ Peaceful Rainbowfish ⚠️ Avoid large aggressive fish⚠️ Best coloration develops in subdued lighting Why This Species Is Special Iridescent blue and purple body coloration Distinctive black lateral stripe Elegant extended tail filaments in males Peaceful and easy to keep Excellent centerpiece fish for community aquariums The Emperor Tetra is one of the most elegant and underrated tetras in the hobby. Its regal appearance, shimmering colors, and graceful swimming behavior make it a standout addition to planted and community aquariums alike. 👑🐟
