Long Arm Shrimp

The dwarf Long Arm Shrimp is a captive-bred form of Macrobrachium rosenbergii selected for smaller body size while retaining the species' distinctive elongated front chelipeds (claws) that extend far beyond the body length in mature males. The body is attractively translucent with blue-green iridescence, making it a visually interesting display animal.

Despite being smaller than wild Macrobrachium rosenbergii, this shrimp retains predatory instincts and will readily eat smaller invertebrates, fish fry, and sick fish. It is not suitable for tanks with dwarf shrimp or small nano fish. It does best in a species-only aquarium or with larger, fast-moving fish that can avoid its claws.

Long Arm Shrimp are hardy and adaptable to a wide range of water conditions. Their larvae require brackish water to complete development, making captive breeding specialist-level work.

Water: 22–28°C, pH 6.5–7.8, GH 4–12; tolerates most dechlorinated fresh water conditions. Tank: minimum 60 L; provide hiding caves and structure; robust plants only as it may uproot fine plants. Feeding: omnivorous predator; sinking pellets, frozen foods, vegetables; will hunt small invertebrates. Breeding: larvae require brackish water; not practical for home aquaria without specialist setup. Compatibility: species-only or with large robust fish; never with dwarf shrimp or nano fish.