Origin
Native to slow, sandy tributaries of the Amazon River system, especially in Brazil and Peru. Typically found in shallow, clearwater environments with minimal vegetation and soft sand beds.

Visual & Functional Appeal
Its transparent-tan body and elongated profile help it blend seamlessly with sand. Subtle dark blotches provide slight contrast, but most of its appeal lies in watching it lie motionless or make short, darting movements—making it a true master of disguise.

Purpose
Plays a role in bio-authentic scapes for South American riverbeds. Offers natural behaviors such as sand-sifting and lying in ambush, contributing to ecological accuracy and interest in quiet setups.

Importance
Rarely seen in the aquarium trade but appreciated by advanced aquarists for its behavior and ecological niche. Encourages specialized setups that mimic fine sediment environments, which are often underrepresented.

Included Resources
Requires ultra-soft sand substrate (no gravel), gentle flow, excellent filtration, and frequent micro-feeding. A seasoned, cycled tank is essential with heavy leaf litter or subtle structure for shelter.

Best Use Cases
Best kept in Amazonian stream biotopes or academic display tanks focused on behavior. Should be the highlight of the setup due to its secretive nature.

Conservation Context
Often overlooked in the wild but serves as an indicator species for ecosystem health. Its preference for undisturbed sand habitats highlights the need for sediment preservation in Amazonian waterways.

Ideal Tank Mates
• No tank mates preferred
• Optional companions: pygmy corydoras, small pencilfish
• Avoid anything boisterous or food-competitive

Region (A)
• Latitude: -3.1019° S
• Longitude: -60.0250° W
(Near Manaus, Brazil — sandy Amazonian tributaries)

Region (B)
• Latitude: -4.2396° S
• Longitude: -70.9435° W
(Upper Ucayali Basin, Peru — clear, slow-moving zones)