Australatya striolata, commonly known as the Australian Riffle Shrimp or Australian Filter Shrimp, is a fascinating freshwater invertebrate native to the fast-flowing, shallow creeks and streams of eastern Australia. Renowned for their unique "fan hands" (modified chelae), these peaceful shrimp sit directly in water currents to filter out microscopic food particles and organic matter. [1, 2, 3, 4, 5] Key Biological Profiles Physical Characteristics: They typically feature a pale yellow, translucent, or robust tan-brown to black body, sharply accented by a distinct yellow or white stripe running down the center of their back. [1, 2] Size & Lifespan: They generally grow to an adult size of about 6 to 8 cm and live for approximately 2 to 4 years. [1, 2, 3] Sequential Hermaphroditism: They are born male and naturally transition into females once they reach a size of roughly 3 to 4 cm. [1, 2] Extreme Climbers: In the wild, juveniles are known to climb up wet, vertical rock faces and scale waterfalls up to 100 meters high to reach mountain streams. [1] Aquarium Care & Environment Requirements If you are considering keeping Riffle Shrimp in a home aquarium, they have very specific habitat needs due to their specialized wild lifestyle: Water Current: A strong, multi-directional flow from a powerhead or internal filter is required so they can comfortably filter-feed. Diet: They are not standard substrate scavengers. They rely on suspended food such as powdered spirulina, baby fry food, crushed flakes, and micronized shrimp foods. Aquarium Parameters: They thrive best in cooler, highly oxygenated water between 17–24°C, with a pH of 6.5–7.5, and very low nitrates. Security: A tight-fitting lid is absolutely essential, as their natural instincts drive them to climb out of open aquariums
