Galaxy Rasbora

Galaxy Rasbora | Danio margaritatus — A Small, Colourful Fish for Planted Aquariums

Galaxy Rasbora, also known as the Celestial Pearl Danio, is a small freshwater fish admired for its striking appearance and lively movements. It grows to around 2–3 cm, making it suitable for smaller aquariums.

This peaceful fish is best kept in a group of at least six. A densely planted aquarium provides cover and hiding places, while suitable peaceful tankmates can include small danios, rasboras, tetras and smaller catfish. Avoid larger, aggressive fish.

Specifications: Galaxy Rasbora | Danio margaritatus

• Common name: Galaxy Rasbora

• Also known as: Celestial Pearl Danio

• Scientific name: Danio margaritatus

• Adult size: Approximately 2–3 cm

• Temperament: Peaceful

• Social behaviour: Schooling fish; keep at least six together

• Minimum aquarium size: 30 litres

• Temperature: 24–26°C

• pH: 5.7–7.5

• Water hardness: 2–10 °NK

• Diet: Omnivorous; offer a varied diet with small foods suited to its size

• Aquarium setup: Densely planted, with hiding places

• Suitable tankmates: Similarly sized, peaceful fish, including small danios, rasboras, tetras and smaller catfish

How to Keep Galaxy Rasbora

1. Keep a group: House at least six Galaxy Rasboras together.

2. Provide a planted environment: Use dense vegetation to create cover and hiding places.

3. Select compatible tankmates: Choose peaceful fish of a similar size and temperament. Do not keep them with larger, aggressive fish.

4. Maintain suitable water conditions: Keep the temperature between 24–26°C, the pH between 5.7 and 7.5, and hardness between 2 and 10 °NK.

5. Offer varied food: Feed an omnivorous diet that includes small foods appropriate for their size.

Care & Maintenance Tips

• Make sure the group has plenty of planted cover and hiding places.

• Choose food small enough for these 2–3 cm fish.

• Check water temperature, pH and hardness regularly to maintain suitable conditions.