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Common name: Blue Emperor Tetra, Purple Emperor Tetra, Royal Tetra, Regal Tetra Scientific name: Inpaichthys Kerri Average Adult Fish Size: 1.5 inches / 3.8 cm Place of Origin: Rio Aripuan and upper Rio Madeira basins, Brazil. Typical Tank setup: Well planted with rocks and driftwood/bogwood. Additive to make the water appear brownish in colour will make the Royal Tetra feel more safe and ...


Blue Emperor Tetra have a very peaceful disposition, thus they should be housed with other small to medium sized peaceful community species. They do best when housed in groups of 6 or more individuals in a well planted aquarium that emulates their natural Amazonian habitat.


An article with detailed information on keeping Blue emperor tetras in fish tanks including their origin, feeding and breeding habits, and tank setup.


Nematobrycon palmeri, commonly known as the emperor tetra, is a species of characid fish found in the Atrato and San Juan river basins in western Colombia.It was first imported in the aquarium trade to the United States in 1960 and has since become well established.


This pretty little species can be seen for sale with various common names, including the ‘blue emperor’, ‘regal’ or ‘royal’ tetra. It’s sometimes confused with the emperor tetra, Nematobrycon palmeri but can be easily distinguished as it possesses an adipose fin, whilst Nematobrycon species do not.


If you're looking for an attractive, peaceful addition to a community tank, the Emperor Tetra may be an ideal choice. Not only is it a handsome, irridescent species with impressive reflective rainbow hues, but it's also a peaceful and hardy addition to a mixed community of South American freshwater fish.


The Blue/Purple Emperor Tetra typically occupies the top and middle level of the water column, although it can often be seen swimming and feeding in the middle and bottom levels as well. It is safe to keep with other peaceful, small fish. Though it has a relatively robust, larger body than many smaller tetras, it has a very small mouth.


The Emperor Tetra (Nematobrycon palmeri) does really well when kept in heavily planted aquariums. They may even breed on a regular basis if you have a small group of them. It's recommended to keep them in groups of 5 or more specimens. They are tetras so fin nipping may happen in the community aquarium.


Emperor tetra is colored in dark blue on the sides below the line. The proctal fin has a black line and yellow edges. The tail outer rays, the string and the first ray on the dorsal are black colored. Has a very expressive color of the eyes – it’s emerald-blue. The fish breeders created black emperor tetra called- Nematobrycon palmeri black.