Blue Emperor Tetra
The Blue Emperor Tetra (Inpaichthys kerri) is a stunning freshwater fish known for its vibrant blue coloration and graceful fins. With its peaceful nature and easy maintenance, it’s the perfect addition to any fish tank. Add a touch of elegance to your aquarium with this beautiful and lively fish.
Like most Tetras, we recommend keeping these fish in groups of 5 or more for them to feel safe in a large school. They will look especially stunning in a planted tank.
These fish are easy to care for as long as they are introduced to a mature, cycled tank. They can acclimate to a wide range of water conditions once established.
| Specification | Details |
|---|---|
| Species | Blue Emperor Tetra (Inpaichthys kerri) |
| Size | 2.5 inches |
| Temperature | 72-78°F |
| Water pH | 6.0-7.5 |
| Group Size | 5 or more |
FAQ
What is the ideal group size for Blue Emperor Tetras?
We recommend keeping Blue Emperor Tetras in groups of 5 or more to ensure they feel safe and display their natural behavior.
What type of tank environment do they thrive in?
Blue Emperor Tetras look especially stunning in a planted tank. They prefer a mature, cycled tank with stable water conditions.
How long does it take for them to acclimate to a new tank?
They can acclimate to a new tank once it is mature and cycled, typically within a few days after introduction.

Andrew Mackenzie –
I added five Blue Emperor Tetras to my 10-gallon planted tank. They’ve been active and peaceful since day one. The blue color is striking and they swim in a coordinated school. Easy to care for as long as the tank is cycled.
Jane Vaughan –
The fish arrived healthy and looked vibrant. I kept them in a group of six with some other tetras. They seem to enjoy the planted background and don’t stress easily.
Kimberly Sanderson –
Great addition to my aquarium. The color is vivid and they swim gracefully. I’ve kept them in a 20-gallon tank with a good filter and stable water parameters. They’ve adapted well.