Redtail Hillstream Loach

The Redtail Hillstream Loach

The Underwater "Stingray" with a Splash of Crimson

Bring a touch of the exotic to your aquarium with the Redtail Hillstream Loach (Sewellia sp.). Often called "Butterfly Loaches" due to their unique, wing-like fins, these fascinating fish look and move like miniature freshwater stingrays. With their intricate reticulated patterns and vivid vermillion-tipped tails, they are the ultimate conversation piece for any high-flow setup.

Why You’ll Love the Redtail Hillstream * Unique Morphology: Their flat, aerodynamic bodies allow them to "stick" to rocks and glass, even in the strongest currents.

Algae Aficionados: They are relentless grazers, spending their day scoured for biofilm and green algae on every surface.

Social & Spunky: Unlike many shy bottom-dwellers, these loaches are active during the day and love to play "tag" with their own kind.

The "Mini-Ray" Aesthetic: Watching them glide effortlessly across the glass provides a hypnotic, saltwater-reef vibe in a freshwater tank.

Quick Care Stats | Feature | Requirement |

| Experience Level | Intermediate |

| Minimum Tank Size | 20+ Gallons |

| Water Temp | 68°F – 75°F (Prefer cooler water)

| pH Range | 6.5 – 7.8 |

| Diet | Omnivore (Algae, biofilm, high-quality sinking pellets) |

| Temperament | Peaceful & Social |

Pro-Tips for a Happy Loach The secret to a thriving Redtail is oxygen and flow. These fish come from fast-moving mountain streams. They require a powerhead or strong filter outlet to simulate their natural habitat. Decorate with smooth "river stones"—the more surface area for algae to grow, the happier your loach will be.

Aquarist Note: While they love algae, they shouldn't rely on it alone! Supplement their diet with Repashy "Soilent Green" or sinking wafers to ensure they stay plump and vibrant.