Highlights

• Scientific Name: Pristella maxillaris

• Common Name: X-ray Tetra

• Origin: Coastal rivers and streams of South America

• Size: Up to 5 cm (2 inches)

• Lifespan: 4–5 years with proper care

• Temperament: Peaceful and social

• Tank Size: Minimum 10 gallons for a small group; ideally 20+ gallons

• Water Temperature: 24–27°C (75–81°F)

• pH Level: 6.0–8.0 (neutral to slightly alkaline)

• Water Hardness: 6–15 GH (soft to moderately hard)

• Filtration: Gentle flow; avoid strong currents

• Lighting: Moderate; they appreciate shaded areas

• Substrate & Decor: Fine gravel or sand, plants, driftwood, and hiding spots

• Type: Omnivorous

• Food Options:

  • High-quality flake or micro pellet food

  • Live or frozen foods: brine shrimp, daphnia, bloodworms

  • Occasional vegetable matter or algae wafers

• Feeding Frequency: 1–2 times daily in small amounts

• Difficulty: Moderate

• Method: Egg scatterers; breeding tank recommended

• Conditions: Slightly warmer water, soft and acidic

• Care: Remove adults post-spawning to prevent egg predation