Description
Pearl Danio – Danio albolineatus
Introduction:
The Pearl Danio (Danio albolineatus) is a graceful freshwater fish admired for its subtle yet captivating pearlescent sheen, ranging from soft pink to iridescent blue hues. Growing up to 2 inches (5 cm) in length, this hardy species is perfect for aquarists of all experience levels. Their peaceful nature, adaptability, and lively schooling behavior make them an excellent addition to community tanks.
1. Natural Habitat and Behavior
Native to Southeast Asia, including Myanmar, Thailand, and Sumatra, Pearl Danios inhabit clear, slow-moving streams and rivers. These fish prefer areas with abundant vegetation and are typically found in shallow waters. In the aquarium, they are active and social, spending most of their time in the middle and upper water columns.
2. Aquarium Setup
- Tank Size: A 10-gallon (38 liters) tank is suitable for a small group, but a 20-gallon (76 liters) or larger is ideal for a school of six or more.
- Substrate: Sand or fine gravel mimics their natural environment, but substrate choice is not critical.
- Decor: Add live plants (like Java Moss, Anubias, or Vallisneria), driftwood, and smooth rocks to provide cover while maintaining open swimming areas.
- Water Conditions:
- Temperature: 68–77°F (20–25°C)
- pH: 6.0–7.5
- Hardness: 4–15 dGH
- Use a gentle filter to create mild water flow, replicating their natural habitat.
- Lighting: Moderate lighting enhances their iridescent coloration.
3. Diet and Feeding
Pearl Danios are omnivorous and thrive on a varied diet:
- Staple Diet: High-quality flakes or micro-pellets designed for small tropical fish.
- Live/Frozen Foods: Include brine shrimp, daphnia, and bloodworms to enrich their diet.
- Plant-Based Foods: Supplement with spirulina-based flakes or finely chopped vegetables like blanched zucchini or peas.
- Feeding Schedule: Offer food 2–3 times a day, giving only what they can consume within 2–3 minutes.
4. Compatibility with Other Fish
Pearl Danios are peaceful and sociable, making them ideal for community tanks:
- Ideal Tank Mates: Compatible species include Harlequin Rasboras, Neon Tetras, Corydoras, Guppies, and small Gouramis.
- Caution: Avoid aggressive or significantly larger fish that may intimidate or prey on them.
- Social Behavior: They should be kept in groups of six or more to reduce stress and encourage natural schooling behavior.
5. Common Challenges and Tips
- Jumping Behavior: Like other danios, Pearl Danios are known jumpers. Use a secure lid to prevent escapes.
- Temperature Preferences: Avoid pairing them with fish that require strictly warmer water, as Pearl Danios prefer slightly cooler conditions.
- Activity Levels: Their active swimming may stress shy or slow-moving tank mates, so choose compatible companions.
- Water Maintenance: While hardy, these fish benefit from stable water parameters and regular water changes (20–30% weekly).
Conclusion
The Pearl Danio is a stunning yet understated addition to any aquarium, offering beauty, adaptability, and lively behavior. Their ease of care and compatibility with a wide range of tank mates make them a favorite among beginner and experienced aquarists. With proper care and a well-planned setup, Pearl Danios will thrive and bring a shimmering elegance to your aquatic community.
