Grey Snapping Shrimp

Alpheus species 5

Grey Snapping Shrimp, Alpheus species 5

Grey Snapping Shrimp

Alpheus species 5

undescribed

Description 

Carapace: The carapace is blue-grey, plain on the sides and longitudinally striped on the dorsum. The stripes are continuous with those on the abdomen. 

The abdomen is grey with longitudinal brown stripes dorsally. Laterally it is uniformly pale grey with a single brown line running through all segments. The last segment and tail have setae. 

The rostrum is grey and the antennae are white. 

The pincers are grey-violet with white or orange dactyl and pollex. 

The chelate second leg is violet with yellow joints. 

The legs are violet-grey with pale yellow joints. 

Identifying Features 

Similar Shrimps

The Violet Shrimp is found in a similar habitat. It can have a striped abdomen but is coloured violet or pinkish-orange and has violet antennae. 

Blue Nipper Shrimp occupies a similar habitat but is much larger. Legs are similar, with a blue wash to chelipeds and thoracic appendages. Carapace and abdominal markings are distinctively different. 

Nomenclature

Hayashi & Shiratori 2003 Alpheus species 6 from Japan

Undescribed species

Ecology

HABITAT

Preferred substrate

Fine silt mixed with coarse sand, shell fragments, pebbles and small rocks. 

Depth range from 5 to 20 metres, usually at the deeper end of the range. 

Proximity to reef

Burrows are constructed near the base of the reef provided that the substrate is silty. Inner lagoon reefs and sheltered sites. Also on flat silty seabed up to 2 km from the shore (Hervey Bay, Frazer Island). 

NATURAL HISTORY 

This shrimp seems to have a particular affinity for very fine silt making them extremely difficult to photograph as they are always in a cloud of silt.

Distribution

Published distribution: From Japan, Hayashi & Shiratori (2003) Alpheus species 6. with the Ventral-barred Shrimpgoby, Cryptocentrus sericus. 

We have seen a photograph from Indonesia in association with Amblyeleotris callopareia (Allen & Erdmann 2015). 

Our records: 

Australia; Frazer Island, Fitzroy Island, Low Isles. 

Solomon Islands; Santa Isabel Island. 

Indonesia; Batanta Island. 

Associated Goby species

Grey Shrimp with Amblyeleotris callopareia, Beautiful-cheek Shrimpgoby
Amblyeleotris callopareia, Beautiful-cheek Shrimpgoby
Grey Shrimp with Amblyeleotris gymnocephala, Mask Shrimpgoby
Amblyeleotris gymnocephala, Mask Shrimpgoby
Grey Shrimp with Amblyeleotris macronema Longspine Shrimpgoby
Amblyeleotris macronema, Longspine Shrimpgoby
Grey Shrimp with Amblyeleotris stenotaeniata, Thinbar Shrimpgoby
Amblyeleotris stenotaeniata, Thinbar Shrimpgoby
Grey Shrimp with Cryptocentrus sericus, Ventral-barred Shrimpgoby
Cryptocentrus sericus, Ventral-barred Shrimpgoby
Grey Shrimp with Cryptocentrus strigilliceps, Target Shrimpgoby
Cryptocentrus strigilliceps, Target Shrimpgoby
Grey Shrimp with Ctenogobiops crocineus, Silverspot Shrimpgoby
Ctenogobiops crocineus, Silverspot Shrimpgoby
Grey Shrimp with Tomiyamichthys nudus, Scaleless Shrimpgoby
Tomiyamichthys nudus, Scaleless Shrimpgoby

Associated Shrimpgobies (eight species)

Amblyeleotris callopareia, Beautiful-cheek Shrimpgoby

Amblyeleotris gymnocephala, Mask Shrimpgoby

Amblyeleotris macronema, Longspine Shrimpgoby

Amblyeleotris stenotaeniata, Thinbar Shrimpgoby

Cryptocentrus sericus, Ventral-barred Shrimpgoby

Cryptocentrus strigilliceps, Target Shrimpgoby

Ctenogobiops crocineus, Silverspot Shrimpgoby

Tomiyamichthys nudus, Scaleless Shrimpgoby

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