Tiger Pistol Shrimp (Alpheus Bellulus) - Marine Invert

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The tiger pistol shrimp can grow to a size up to 4 to 5 cm, not including antennae. The body is stout and opaque. The background color of the body is yellowish-white or plain yellow. The patterns drawn on the cephalothoraxabdomen, and tail are irregular but symmetric, their coloration varies from light brown, brownish-purple to brownish orange.

The legs are banded with the same colors as the body and are covered with short bristles. The antennae are red. 

The chelipeds are also banded, with the right being bigger and modified into a powerful weapon. By closing at extreme speed, the cheliped expels an air bubble at more than 100 kilometers per hour (62 mph) towards the prey.

This action is accompanied by a loud bang. This powerful sonic weapon creates a violent shock wave that can kill or knock out prey, which could be another shrimp or a small fish passing close to the tiger pistol shrimp.