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Emperor tetra, photographed on a transparent background

FreshwaterIn the market150 coinsUncommon

Emperor tetra

Nematobrycon palmeri

Not a school but a neighborhood; males hold a spot and display at rivals.

The Emperor tetra (Nematobrycon palmeri) is a tropical freshwater fish of the family Acestrorhamphidae. Adults grow to about 5 cm. In the aquarium it needs a tank at least 90 cm long and water at 22–27 °C.

Size
5 cm
Smallest tank
90 cm
Temperature
22–27 °C
Care
Moderate

In the aquarium

Temperature22–27 °C
pH5.5–7.5
Hardness1–12 °dGH
Temperament
Peaceful
Diet
Omnivore
Activity
Calm
Water layer
Mid water
Group
Happiest in a group of 8 or more
Plants
Plant safe
Drawn to scale in a 90 cm tank

These values are compiled from real species data, and the LumaReef simulation is built to keep them true to life.

Which tank it fits

  • Nano60 cm · 65 litresToo small
  • Standard90 cm · 180 litres51 of them
  • Wide120 cm · 300 litres85 of them
  • Living room180 cm · 650 litres185 of them
  • Showcase250 cm · 1,200 litres342 of them
  • Gallery300 cm · 1,440 litres411 of them

Who it lives with

In the wild

Water type
Freshwater
Climate zone
Tropical
Aquarium trade
Traded commercially

Classification

  1. OrderCharaciformes
  2. FamilyAcestrorhamphidae
  3. GenusNematobrycon
  4. SpeciesNematobrycon palmeri
  5. Described byEigenmann, 1911

In other languages

German
Kaisersalmler
Russian
Королевская тетра

Quick answers

Emperor tetra size: how big does it get?
Adults reach about 5 cm. Record sizes among the 13 Acestrorhamphidae species on LumaReef: 2 cm (Ember tetra) to 7.5 cm (Black skirt tetra).
Emperor tetra tank size: what is the minimum?
A tank at least 90 cm long. In LumaReef that is the Standard tank or larger.
Emperor tetra water parameters: what does it need?
Temperature 22–27 °C, pH 5.5–7.5, hardness 1–12 °dGH. Close to what most Acestrorhamphidae on LumaReef need (23–28 °C).
Emperor tetra tank mates: what can it live with?
It gets along with 80 of the 99 freshwater species in the catalogue, such as Zebra danio, Cherry barb, and Platy.
Emperor tetra: alone or in a group?
Keep at least 8 together.
Emperor tetra and plants: is it plant safe?
Yes, it leaves plants alone.

All Acestrorhamphidae speciesAll species A–Z

Sources

Emperor tetra: compiled from these references.