The tetra emperor or Nematobrycon palmeri is part of the family Characidae and the genus nematobrycon. This genus also includes the nematobrycons amphioxus and lacortei, less popular aquarium. The emperor tetra lives in nature in Colombia.
Anatomy of the emperor tetra
The tetra emperor has a body quite high and compressed laterally. Their basic color is brownish, a beautiful blue iridescent stripe night separates the body from the operculum to the caudal one. The upper body is pink and the belly white. The fins are transparent and lemon yellow at the ends.
The fins are much more developed in males. They have blue eyes while females have green eyes. They measure about 6 cm.
Specific Needs and Nutrition
The emperor tetra is an undemanding fish, and therefore suitable for beginners. Although it can adapt to any type of water, it is a fish that prefers a water with a pH between 6 and 7 and a hardness between 8 and 15. The ideal temperature is 26 °
The tetra emperor is a good swimmer, so keep it in a minimum volume of 100 liters. He enjoys a tray with hiding places and plants in large numbers. It evolves mainly in the middle and the bottom of the tank.
This fish is famous for being carnivorous. I dreaded his behavior towards dry food. Well, I can say he likes !! Sequins, pellets are well accepted and I would say it is voracious! The artemia and the vases also delight him. The tetra emperor is the only species that I maintain that goes for food on the surface.
The tetra emperor is often described as aggressive with his congeners. Males may not support each other. This is why some sources recommend keeping him in a relationship. Other sources suggest keeping it in groups, with one male for every 3 females. It is for this maintenance that I opted. I can say that at home males do not show aggression between them. They have, it is true, a good volume and a well-planted tray. They sometimes deploy their fins when they cross but it stops there! The emperor grouse are not shy far from it! At home, they occupy the front of the aquarium permanently and do not hide even when I put my hands in the water. I must even be very careful not to suck them when I do my weekly maintenance!
Reproduction of the emperor tetra
The tetra emperor is not a very prolific species but reproduction is not very difficult to achieve.
The water must be soft (10 °) and the temperature 26 °. The relatively adhesive eggs are laid among the plants. Parents must be removed after laying, otherwise they may eat the eggs.
The fry are born after 48 hours and grow quite fast. They will be fed with infusoria the first week, then with nauplies of artemia.