Glowlight tetra
Hemigrammus erythrozonus
FishFreshwater
- Care level
- Easy
- Temperament
- Peaceful
- Minimum tank
- 60 L
- Maximum size
- 4 cm
- Temperature
- 23–28 °C
- pH
- 5.5–7.5
- Group size
- ≥ 8
- Diet
- Omnivore
Care at a glance
The glowlight tetra has no bright colours but a single orange-red line of light running from eye to tail across a translucent body, like a glowing filament. In a group against a dark background the effect is subtler than the neon tetra's, but every bit as attractive.
It is peaceful, hardy and considerably less delicate than its better-known relatives, which makes it a good choice for a first community tank. As with almost all tetras: a large group rather than a handful, soft to neutral water and subdued light with floating plants. Food has to be small enough — its mouth is modest.
Related species
Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.
In the BlubHub app you link your inhabitants to this database and see the care info next to your own water parameters.