Exclamation Point Rasboras (Boraras urophthalmoides)
Exclamation Point Rasboras are a peaceful and colorful small fish native to Asia, including Thailand, Vietnam, and Cambodia. They are also known as Least Rasbora, Sparrow Rasbora, or Spice Rasbora. These fish thrive in soft, acidic water conditions and are well-suited for nano or planted aquariums.
They are easily recognized by the distinct dark horizontal mark resembling an exclamation point on their body. Their body coloration ranges from golden yellow to dark green, making them a visually appealing addition to any community tank.
Exclamation Point Rasboras are hardy and peaceful, making them ideal for beginner aquarists. They prefer a densely planted tank environment to feel secure and to maintain water quality.
| Specifications |
|---|
| Scientific Name: Boraras urophthalmoides |
| Common Names: Exclamation Point Rasbora, Least Rasbora, Sparrow Rasbora, Spice Rasbora |
| Origin: Thailand, Vietnam, Cambodia |
| Water Type: Soft, acidic |
| Size: Up to 2.5 cm (1 inch) |
| Temperament: Peaceful |
| Compatibility: Good with other small, non-aggressive fish |
| Adult Lifespan: 3–5 years |
FAQ
What is the ideal water condition for Exclamation Point Rasboras?
Exclamation Point Rasboras prefer soft, acidic water with a pH between 5.5 and 6.5 and a water temperature around 22–26°C.
Are Exclamation Point Rasboras suitable for beginners?
Yes, they are hardy and peaceful, making them a great choice for beginner aquarists who maintain a well-planted, stable tank environment.
Can Exclamation Point Rasboras live with other fish species?
They are compatible with other small, non-aggressive fish such as neon tetras and dwarf gouramis, as long as the tank is well-planted and the water conditions are stable.
Anne Wright –
I bought these rasboras for my 10-gallon planted tank. They’ve been thriving for three months. The exclamation point marking is very noticeable and adds a nice visual touch. They’re calm and don’t bother other fish. Easy to care for and perfect for a small aquarium.
Caroline McGrath –
The fish arrived healthy and seemed active right away. I kept them in a tank with java fern and moss. They swim together in groups and look vibrant. A bit shy at first, but they settled in quickly. Would recommend to anyone starting with small community fish.
Dorothy Mackay –
Great addition to my nano tank. The colors are bright and the fish are peaceful. I didn’t have to adjust water parameters much, which made it easy. They enjoy the plants and stay near the surface, which is ideal for visibility.