How long do Glowlight Tetras live?
Glowlights live roughly 4-5 years with stable water and a sensible diet. They are reasonably robust for a small tetra, rewarding consistent care.
What do Glowlight Tetras eat?
Feed fine flake, micro-pellets, and small frozen or live foods such as brine shrimp and daphnia, in portions finished in two minutes. Overfeeding and a single-food diet are the usual avoidable mistakes.
Tank size and water parameters
A 10-15 gallon (38-57 L) tank works for a school of 8-10. Target 74-82°F (23-28°C), pH 5.8-7.5, soft to moderate water, zero ammonia and nitrite, nitrate under 20 ppm. Keep in groups of 6+; subdued light and plants make the stripe glow.
Common mistakes with Glowlight Tetras
Common errors: too small a group so they fade and hide; keeping them with fin-nippers or boisterous fish; and unstable water in a small tank where missed water changes spike toxins quickly.
Beginner mistakes to avoid
- Schooling them in too few numbers — 6+ keeps them confident and colorful.
- Mixing with fin-nippers or rough tank mates that stress small tetras.
- Letting nano-tank water swing — small volumes need frequent partial changes.
- Overfeeding a flake-only diet — vary foods and keep portions small.