Merah/Phoenix Rasbora
The Merah/Phoenix Rasbora (Boraras merah) is a small, peaceful community fish native to Southeast Asia. It is known for its vibrant red coloration and active yet calm behavior in aquariums.
Key Features
- Size: 1.5 to 2.5 cm (0.6 to 1 inch)
- Color: Bright red with a silvery base
- Temperament: Peaceful and social
- Water Temperature: 22–26°C (72–79°F)
- Water pH: 6.0–7.0
- Hardness: 2–8 dGH
| Parameter | Value |
|---|---|
| Length | 1.5–2.5 cm |
| Temperature | 22–26°C |
| pH | 6.0–7.0 |
| Hardness | 2–8 dGH |
FAQ
What is the ideal tank size for Merah/Phoenix Rasbora?
A minimum of 10 gallons is recommended to provide enough space for a group of these small fish.
Are Merah/Phoenix Rasbora compatible with other fish?
Yes, they are peaceful and work well with other small, non-aggressive community fish such as neon tetras and dwarf gouramis.
How long does it take for Merah/Phoenix Rasbora to reach full coloration?
Full red coloration typically develops within 4 to 6 weeks after introduction to a stable environment.

Sebastian Hamilton –
The fish arrived quickly and looked healthy. They are very active and colorful in my 20-gallon tank. I’ve added a few more to create a group, and they swim together nicely. Easy to care for and a great addition to a community setup.
Gavin Paterson –
I bought this for my beginner aquarium. The fish are calm and don’t stress other species. The red color stands out well in the tank. Just make sure the water parameters are stable.
Neil Quinn –
Great quality and vibrant appearance. They’ve been in the tank for two months and still look bright. I love how they school together and add visual interest without being too active.