X-Ray Tetra
Pristella maxillaris
Also known as: X-Ray Tetra, Pristella Tetra, Golden Pristella Tetra, Water Goldfinch
Origin: South America (Orinoco, Amazon coastal rivers, Venezuela, Guyana)
Water Parameters
Quick Stats
- Max Size
- 4.5 cm
- Min Tank
- 60 L
- Lifespan
- 3-5
- Swimming Level
- middle
- Schooling
- Yes (6–12+)
- Diet
- omnivore
- Temperament
- peaceful schooling fish
About
Pristella maxillaris, the X-Ray Tetra or Pristella, is one of the few characins found in both freshwater and brackish coastal rivers of South America. Its translucent body is highlighted by bold black-and-yellow dorsal and anal fins, and a vivid caudal fin. It is notably hardy and adaptable, tolerating a wider range of water conditions than most tetras.
Care Guide
Water: 24–28°C, pH 6.0–7.5, soft to moderately hard; tolerates slightly brackish water. Tank: 60 L minimum; works well in planted or lightly decorated community tanks. Feeding: Accepts flake, micro-pellets, and small frozen or live foods. Behaviour: Peaceful, active schooling species; groups of 8+ recommended. Compatibility: Ideal with other small peaceful tetras, livebearers, corydoras, and rasboras.
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