American Filter Shrimp

About

The American Filter Shrimp (Atya scabra) is one of the more unusual freshwater invertebrates you can keep, and once you understand how it feeds, it becomes genuinely fascinating to watch. Instead of scavenging the bottom like most aquarium shrimp, this species uses fan-like appendages on its front claws to strain fine particles and microorganisms directly from the water. In the wild it inhabits fast-moving streams and rivers across parts of Central America and the Caribbean, typically positioning itself in current where suspended food is constantly delivered to it. In the aquarium, replicating that flow is one of the key things to get right. It appreciates good water movement and a mature tank with a healthy microbial load. Despite its impressive size relative to most hobby shrimp, it is entirely peaceful and poses no threat to fish or other tankmates. That said, very small fish or fry could theoretically be caught if they drift too close to those feeding fans, so some common sense applies. For a beginner willing to meet its flow and feeding needs, it is a rewarding and genuinely different addition to a freshwater setup.