Marble Shrimp

Saron marmoratus, the Marble Shrimp, is primarily known as a marine shrimp but certain populations have adapted to freshwater or brackish conditions in the Indo-Pacific. The freshwater-adapted form retains the species' intricate marbled pattern of greens, browns, cream, and rust scattered across the body in an endlessly variable camouflage design. Males develop characteristic elongated front legs as they mature.

This is an unusual and specialist shrimp that requires stable conditions and is not suitable for typical community aquaria. Its nocturnal behaviour means it is most active after lights-out, and its cryptic pattern makes it difficult to spot during the day. It is best kept as a species-specific curiosity in a biotope-style setup.

Breeding in pure freshwater is extremely difficult; captive specimens are primarily maintained as display animals. Its unusual appearance and behaviour make it a fascinating subject for invertebrate specialists.

Water: 22–28°C, pH 6.8–7.8, GH 5–12; stable, moderately hard water; avoid extremes. Tank: minimum 40 L; provide caves, rocks, and driftwood for daytime hiding; dim lighting preferred. Feeding: omnivore; sinking pellets, frozen foods, algae, organic detritus; feeds primarily at night. Breeding: very difficult in pure freshwater; larvae may require brackish or marine conditions. Compatibility: keep alone or with large, peaceful fish; will prey on small invertebrates.