Name: Opae Ula (Halocaridina rubra) Max Size: Up to 1.5 centimeters (about 0.6 inches) Water Parameters: pH 7.5-8.5, temperature 65-80°F, salinity around 1.014-1.018 specific gravity Diet: Algae-based diet; thrives on biofilm and microalgae. Can be supplemented with spirulina powder or algae wafers in small amounts. Temperament: Extremely peaceful and social. Prefers to live in groups. Tank Setup: Best kept in a low-maintenance brackish water setup with lava rock or coral substrate, minimal filtration, and indirect light to encourage algae growth. Compatibility: Only compatible with its own species. Not suitable for tanks with fish or larger shrimp. Behavior: Very hardy and low-activity; spends much of its time grazing on surfaces. Known for its long lifespan and resilience. Fun Fact: Opae Ula can live over 20 years in the right conditions and are often found in Hawaiian anchialine pools.
