Japanese skeleton shrimp, Caprella mutica


Short description of Caprella mutica, Japanese skeleton shrimp

A large skeleton shrimp up to 49 mm in length; males are larger than females.  There are fine hairs on the first two body segments, large spines on third to seventh body segments in males and orange spots on the females’ brood pouch.

Description of Caprella mutica, Japanese skeleton shrimp status in GB

The Japanese skeleton shrimp has established populations in the North Sea, the west coast of Scotland, in the Irish Sea and English Channel. 

Habitat summary: Caprella mutica, Japanese skeleton shrimp

Typically found on a range of natural substrata including hydroids and attached or drifting macro-algae (seaweed), and also artificial substrata such as ropes, buoys, boat hulls and floating pontoons.  Often found associated with areas of human activity; marinas, harbours, aquaculture sites.

Overview table

Environment: Marine
Species status: Non-Native
Native range: China, Mongolia, Hokkaido, Honshu, Kyushu, Nansei-shoto, Shikoku, North Korea, South Korea, Sakhalin, Taiwan
Functional type: Detritivore
Status in England: Non-Native
Status in Scotland: Non-Native
Status in Wales: Non-Native
Location of first record: Lyne of Lorn, near Oban Scotland
Date of first record: 2000

Distribution map

GB Distribution from NBN Atlas

Author's name:

Natalie Sweet

Last updated:

January 6th, 2012

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