Emperor Blue Tetra

Emperor Blue Tetra (Inpaichthys kerri)

The Emperor Blue Tetra, often known as the Blue Emperor Tetra, is a stunning freshwater schooling fish prized for its shimmering blue coloration and peaceful nature. Its body displays beautiful metallic shades of blue and violet that seem to glow under aquarium lighting, creating a striking display as schools move through the aquarium. Elegant, active, and easy to care for, this species is a fantastic addition to planted aquariums and community tanks.

Native to the clear waters of Brazil, Emperor Blue Tetras thrive in planted aquariums with driftwood, natural décor, and open swimming areas. Their iridescent coloration contrasts beautifully against green aquatic plants and darker substrates, making them especially popular among aquascapers. When kept in groups, their natural schooling behavior creates a mesmerizing display of movement and color.

These peaceful fish are ideal for community aquariums and coexist well with other tetras, rasboras, Corydoras, dwarf cichlids, and similarly sized tank mates. They readily accept flakes, micro pellets, frozen foods, and other prepared diets. A varied diet and high-quality water conditions help bring out their most vibrant colors.

Scientific Name: Inpaichthys kerri
Common Name: Emperor Blue Tetra / Blue Emperor Tetra
Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Adult Size: Up to 2 Inches
Minimum Tank Size: 20 Gallons
Origin: Brazil
Plant Safe: Yes

If you're looking for a colorful and active schooling fish, the Emperor Blue Tetra is an excellent choice. Its brilliant metallic blue coloration, peaceful disposition, and compatibility with planted aquariums make it a standout addition to freshwater community tanks.