
Ornate tetra
A dark high dorsal fin above a pale pink-silver body
Mature males develop extended dorsal and anal fins; younger fish and females have shorter fins.
- Adult length
- Up to 4.3 cm (standard length, without the tail fin)
- Water temperature
- 20–28 °C
- pH
- 5–7.5
- Hardness
- 1–12 dGH
- Native range
- Native to the Amazon River basin.
- Natural habitat
- Sluggish tributaries, side channels and forest lakes with submerged wood and vegetation, usually in brown-stained, low-mineral water.
Use mature, stable water and prevent organic waste accumulation.
Appearance and identification
Rosy tetras and whitefin trade labels can be confused; neither a shoulder mark nor white fin tips identify it alone.
Same-species behaviour
Keep a mixed group of eight to ten or more, with room for male display and hierarchy.
Space requirements
Allow a 90 × 30 cm base with shaded retreats and swimming space.
Diet and feeding
Rotate appropriate dry, frozen and live foods.
Compatibility limits
Assess male competition and companion behaviour.
Aquarium environment
Plants, wood and subdued light provide shelter.
Sources
www.fishbase.se ↗ 2026-10-25
www.seriouslyfish.com ↗ 2026-10-22
researcharchive.calacademy.org ↗ 2026-10-22
www.ichthyologie.de ↗ 2026-10-22
www.seriouslyfish.com ↗ 2026-10-22
ftp.tbs-aqua.com ↗ 2026-10-22
bwaquatics.com ↗ 2026-10-22
www.fishbase.se ↗ 2026-10-22
www.aquariumglaser.de ↗ 2026-10-22
