Image of a Emperor Tetra, Nematobrycon palmeri

Emperor Tetra

Nematobrycon palmeri

Reviewed for accuracy · Last updated Dec 20, 2025, 5:16 PM

Graceful, mid-to-upper-level shoaler that displays subtle hierarchy behaviors. Generally peaceful, with males showing brief but harmless displays

Key Information

Water Type

Freshwater

Temperament

Moderate

Care Level

Rookie

Minimum Tank Size

21 gal (80 L)

Maximum Size

2 in (4.5 cm)

Lifespan

5–6 years

Diet

Omnivore

Migration

Resident

Emperor Tetra Water Parameters

73–81 °F (23–27 °C)
5.0–7.5
4–12 dGH
1.000–1.003 SG

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