Freshwater
Glass tetra
Bario oligolepis
Acestrorhamphidae, Thayeriinae
Facts
Characteristics
- Length
- Up to 10 cm
- Body shape
- Deep-bodied
Care
- Group
- At least 6 together
- Smallest aquarium
- 152 liters
- Diet
- Missing
Know what is missing? Suggest it in the app.
Behavior
Water values
Smallest tank
Range
Native
Lives wild in Brazil, French Guiana, Guyana, Peru, Suriname, and Venezuela.
Videos
Exploring the Crystal-Clear Waters of Rio Cristalino | Incredible Fish of Brazil.
CHRIS LUKHAUPOct 4, 2026
The Fish of Rio das Mortes – Brazil’s Hidden Aquatic Treasure
CHRIS LUKHAUPAug 23, 2026
More about the species
Description
A gregarious species which prefers the counter current zones of small creeks. Omnivorous. It is very prolific and reproduction in the aquarium is very easy to carry out. Oviparous.
Other names
Other scientific names
- Moenkhausia oligolepis
- Tetragonopterus oligolepis
In other languages
- Nättetra
- Halepletstetra
- Kennotetra, Verkkosuomutetra
- Glossy tetra, Redeye tetra
Articles
All articles
How many fish can I keep?4 min read
Why "one cm of fish per liter" falls short, and what adult size, schools, territory and swimming zones mean for how many fish a tank can hold.
How to set up a South American aquarium4 min read
Soft, acidic water, subdued light, sand, roots and fallen leaves: how to set up a biotope aquarium from the Amazon and the rivers around it.
How to add new fish4 min read
From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.
Quarantine for new fish3 min read
Why new fish should live in a tank of their own for a few weeks before they move in, what you need, and what to look for.