Bigclaw River Shrimp

The bigclaw river shrimp is a large Macrobrachium species living in the Atlantic-draining rivers of the Americas. The dark brown bands and lines on a yellowish background, and the very thick, long claws, especially in males, make it recognizable. Adult males can exceed 20 cm. It is rarely seen in aquariums; it is impressive but a dangerous predator. Because its larvae develop in brackish water, it does not breed in the aquarium.

• 200 liters or more for a single adult, with a large floor area.
• 24–27°C, near-neutral, moderately hard water; a strong filter, good oxygenation and gentle flow.
• Large caves that can hold its whole body.
• A tight lid; when startled it may jump and climb.
• A 25–30% water change every week; because of its large size it produces a lot of waste.

Omnivorous and fond of animal food. It eats sinking tablets, fish and mussel meat, shrimp, bloodworms and blanched vegetables. Remove leftovers within a day.

Nocturnal and territorial. It catches fish, shrimp and snails with its claws; it fights fiercely with members of its own species.

Good companions: It should be kept alone.

Avoid: All fish, shrimp, snails, crayfish and crabs.