Description: This shrimp reaches a length of up to 7.5 cm, although most animals are smaller than this. It is usually well camouflaged in its habitat, the colour is a mottled brown or grey and blends in very well with the substrate, especially if the shrimp is buried or partially buried. The rostrum is short, only about half the length of the eye, with a rounded tip and a narrow point. Upper surface of the section in front of the tail has a deep groove and some ridges.

Habitat: Found from 10 m to around 250 m. Fine sand, gravel or fine muddy substrate.

Distribution: Widely distributed around Britain and Ireland.

Similar Species: Could be confused with Crangon crangon. Careful inspection of the upper surface in front of the tail required. In C. allmanni there is a deep groove and ridges running across this section of the body.

Key Identification Features:

• Reaches up to 7.5 cm.
• Mottled brown or grey, well camouflaged and often buried or partially buried.
• Upper surface in front of tail has a deep groove and ridges.

Distribution Map from NBN: Crangon allmanni at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Crangon allmanni at iNaturalist World Species Observations database.

GBIF data for Crangon allmanni

WoRMS: Crangon allmanni at World Register of Marine Species. Accepted name: Crangon allmanni Kinahan, 1860. AphiaID: 107551.

Classification: Biota; Animalia; Arthropoda; Crustacea; Multicrustacea; Malacostraca; Eumalacostraca; Eucarida; Decapoda; Pleocyemata; Caridea; Crangonoidea; Crangonidae; Crangon