The Sulawesi Cardinal Shrimp is endemic to Lake Cardinal (Danau Towuti and associated lakes) in Sulawesi, Indonesia — one of the world's ancient lakes with millions of years of evolutionary isolation that have produced a uniquely specialised fauna. It is arguably the most visually spectacular dwarf shrimp in the freshwater hobby, displaying a deep crimson-red body adorned with precisely distributed brilliant white spots that create a jewel-like, almost surreal appearance.
The lakes of Sulawesi are ancient, stable, warm, and moderately alkaline — conditions completely opposite to the soft, acidic water preferred by Caridina cantonensis variants. The Cardinal Shrimp requires warm temperatures of 26–30 °C and a moderately alkaline pH of 7.5–8.5, along with specific mineral composition that reflects the unique ionic chemistry of its home lake. Standard tap water, RO water, and Caridina mineral salts are all unsuitable — specialised Sulawesi mineral supplements designed to replicate Lake Cardinal water chemistry are essential.
Due to its extreme habitat specialisation, the Cardinal Shrimp is strictly an advanced keeper's species. Even slight deviations from its precise parameters can cause rapid deterioration. However, for those willing to invest in proper equipment and preparation, it rewards its keeper with one of the most extraordinary living jewels available in the freshwater hobby.
