Exclamation Point Rasbora
Boraras urophthalmoides, also known as the Exclamation Point Rasbora, is a tiny species of rasbora native to Thailand. These are among the smallest freshwater fish, reaching a maximum length of about 0.5 inches. They are hardy and thrive in community tanks when kept with compatible species.
Due to their small size, they are vulnerable to being eaten by larger fish. Suitable tankmates include other nano rasboras, Celestial Pearl danios, certain pencilfish, and small gouramis like Chocolate or Sparkling gouramis.
Males may develop a metallic orange stripe above their black lateral stripe, though they are not as vividly colored as Chilli rasboras (B. brigittae). These fish reach maturity at around 0.5 inches and are generally full-grown by adulthood.
| Species | Maximum Length | Origin | Temperament |
|---|---|---|---|
| Boraras urophthalmoides | 0.5 inches | Thailand | Peaceful, schooling |
FAQ
What is the maximum size of Exclamation Point Rasbora?
The maximum length of Exclamation Point Rasbora is about 0.5 inches.
Are Exclamation Point Rasboras suitable for community tanks?
Yes, they are peaceful and work well in community tanks with compatible nano fish such as other rasboras, Celestial Pearl danios, pencilfish, or small gouramis.
Do males develop any distinctive color patterns?
Males can develop a metallic orange stripe above their black lateral stripe.
Neil Harris –
I’ve kept Exclamation Point Rasboras for three months now. They’re very active and add a nice touch to my nano tank. The orange stripe on the males is subtle but noticeable. I keep them with Celestial Pearl danios and they get along well. Easy to care for and don’t require much space.
Andrea Bond –
These little fish are charming and stay active in a 5-gallon tank. I paired them with pencilfish and they form a nice school. The coloration is not flashy, but it’s unique. I’m happy with the size and temperament.
Emma Turner –
Perfect for a small tank. They’re peaceful and don’t stress other fish. I noticed the metallic orange stripe on the males after a few weeks. I’ve kept them with Chocolate gouramis and they coexist well.