A violet-grey body with a black band running into a tail that ends in three points instead of two, and eyes that shine turquoise. Understated in a way that reads as expensive.
Temperament
Common health issues
- Ich (white spot)
- Fin rot
- Swim bladder disorder
Care at a glance
- ExerciseModerate
An active swimmer that appreciates open swimming space.
- GroomingRoutine tank care
Weekly partial water changes keep them in top shape.
- Living spaceNano-tank friendly
Happy in a small, stable, well-filtered tank.
- Owner experienceSome experience helps
A little know-how makes life smoother.
- Commitment5โ6 years
Plan for a long, loving relationship.
Health to watch: Ich (white spot) ยท Fin rot ยท Swim bladder disorder
๐ Care guide
The Emperor Tetra (Nematobrycon palmeri) comes from the San Juan and Atrato rivers in Colombia and reaches about 4 to 5 cm. Two features set it apart: the middle rays of the tail extend to form a third point between the usual two lobes, and the upper half of the eye glows blue-green in males. Females are smaller with a duller eye and a rounder body. A group of six or more needs 80 litres or more at 23-27C, pH 6.0 to 7.5 in soft to moderately hard water, with planting, wood and diffused light. Feed quality micro pellets and flake with frozen daphnia, cyclops and brine shrimp. It is peaceful with other species, though males set up small loose territories and display at each other with spread fins, so a group with several females spreads that energy out. It does not shoal tightly like a neon, tending instead to spread across the tank as individuals, which is normal for the species rather than a sign of stress.
Frequently asked questions
How active is a Emperor Tetra?
Moderate. An active swimmer that appreciates open swimming space.
How much maintenance does a Emperor Tetra need?
Routine tank care. Weekly partial water changes keep them in top shape.
What tank size does a Emperor Tetra need?
Nano-tank friendly. Happy in a small, stable, well-filtered tank.
Is a Emperor Tetra a good fit for first-time owners?
Some experience helps. A little know-how makes life smoother.
How long do Emperor Tetra live?
5โ6 years. Plan for a long, loving relationship.
What health issues affect the Emperor Tetra?
Keep an eye out for Ich (white spot), Fin rot, Swim bladder disorder. These are worth raising with your vet, along with any screening they recommend.
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