Butterfly Hillstream Loach (Sewellia breviventralis)
A stunning freshwater algae-grazing fish admired for its striking reticulated golden-and-dark pattern and unique butterfly-shaped fins. With a flattened body perfectly adapted for fast-flowing rivers, it resembles a tiny stingray as it clings to rocks and glass. Peaceful, active, and plant-safe, it makes an excellent addition to well-oxygenated community aquariums.
Originating from the cool, fast-moving streams of Vietnam and Laos, Sewellia breviventralis belongs to the Balitoridae family. Unlike many bottom-dwellers, this species thrives in tanks with strong current and ample surface oxygenation.
| Key Features | Details |
|---|---|
| Species | Sewellia breviventralis |
| Origin | Vietnam, Laos |
| Body Shape | Flattened, stream-adapted |
| Behavior | Peaceful, active, algae-grazing |
| Water Conditions | Well-oxygenated, flowing water |
| Compatibility | Community tanks with plant-safe fish |
FAQ
What kind of water conditions does the Butterfly Hillstream Loach prefer?
This species thrives in well-oxygenated water with a strong current, mimicking its natural habitat in fast-moving streams of Vietnam and Laos.
Is the Butterfly Hillstream Loach safe around plants?
Yes, it is plant-safe and does not damage aquatic vegetation.
Can this fish be kept with other community fish?
Yes, it is peaceful and suitable for community tanks with compatible, active fish that don’t require strong bottom-dwelling space.
Pippa Hardacre –
The Butterfly Hillstream Loach is a beautiful addition to my aquarium. It moves gracefully along the rocks and adds a lot of visual interest. It doesn’t disturb plants and is very calm. I’ve had it for three months and it’s still active and healthy.
Richard Sharp –
Great fish with a unique appearance. I noticed it grazing on algae on the glass and rocks. The tank needs a strong current, which I’ve adjusted. It’s peaceful and doesn’t stress other fish.
Jack Lyman –
First time keeping a hillstream loach. The golden and dark pattern is striking. It stays near the back of the tank, clinging to rocks. Very active and doesn’t eat my plants. Perfect for a flowing tank setup.