Body chocolate to chestnut brown in color, carapace with irregular whitish patches, abdomen with narrow whitish longitudinal stripes; major chela dark orange to brown with distal portions whitish. Carapace length up to 1 cm.
Snapping shrimps or pistol shrimps are immediately distinguished from other families by having one claw much larger than the other, the larger claw cylindrical and with a parrot-beak-like finger. The snapping apparatus on the claw involves a piston at the base of the moveable finger that fits into a cavity of the fixed finger. When clicked closed by the strong muscles in the palm, a sudden jet of water is expelled to stun its prey, such as crabs and fishes. A sharp click is heard at the same time and may even be audible to us when walking over mudflats where the shrimps can be common.
In heads of dead coral, intertidal pools, depths to 6 m.
Indo-west central Pacific Oceans (East Africa to Ryukyu Islands, east to Hawai'i) including south-eastern and south-western Australia.
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed