Blue Emperor Tetra
The Blue Emperor Tetra is a species of tetra fish known for its bright blue coloration and distinctive shape. This species is native to the South American rivers and streams, where it is found in both clear and murky waters. The Blue Emperor Tetra has a deep, oval-shaped body and a small, pointed mouth. They are active and social fish, and do best in schools of 6 or more individuals. They are hardy and easy to care for, making them a great choice for both novice and experienced aquarium hobbyists.
Key Details
| Scientific Name | Nematobrycon palmeri |
|---|---|
| Origin | South America |
| Lifespan | 5-7 years |
| Maximum Size | 2 inches |
| Diet | Omnivore, primarily eats small insects, crustaceans, and plant matter |
FAQ
What is the ideal school size for Blue Emperor Tetras?
Blue Emperor Tetras are social fish and do best in schools of 6 or more individuals.
What kind of diet do Blue Emperor Tetras prefer?
They are omnivores and primarily eat small insects, crustaceans, and plant matter.
Where are Blue Emperor Tetras originally from?
They are native to South American rivers and streams.

Sonia Peake –
I bought a group of Blue Emperor Tetras for my 20-gallon tank. They are very active and their bright blue color stands out well. I keep them in a school of 8, which makes them look more natural and lively. Easy to care for and they don’t stress the tank environment.
Ruth Skinner –
The fish arrived healthy and seem to be adjusting well. I feed them a mix of flakes and live foods. They swim together in a coordinated way, which is very pleasing to watch. A good choice for beginners.
Yvonne McGrath –
I’ve had these tetras for over a year now. They stay active and vibrant. The school behavior is impressive, and they don’t seem to fight or stress each other. Great for a community tank.