Black skirt tetra
Gymnocorymbus ternetzi
FishFreshwater
- Care level
- Easy
- Temperament
- Semi-aggressive
- Recommended tank
- 60 L
- Maximum size
- 5.5 cm
- Temperature
- 20–26 °C
- pH
- 6–7.5
- Group size
- ≥ 6
- Diet
- Omnivore
Care at a glance
The black skirt tetra from the Paraguay and Guaporé basins has a deep silvery body with two black bars and a broad, skirt-like anal fin. Young fish are jet black at the rear; over the years that fades to grey, which is entirely normal.
It is lively and will nibble long fins, so keep it in a larger group and away from veiltails and bettas. Do not be tempted by brightly coloured specimens in the shop: those are artificially dyed, a treatment that weakens the fish.
Good to know
Best not combined with
Related species
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Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.