Green Snapping Shrimp

Alpheus species 4

Green Shrimp

Green Snapping Shrimp

Alpheus species 4

undescribed

Description 

A medium-sized green shrimp with darker green freckles in transverse bands. White bands on segments 1 and 4. The rostrum is strikingly bright green and makes a useful identification feature

Carapace Light green marked with complex freckles in dark green. The side of the carapace has indistinct brown-green patches but is plain. 

The Abdomen: green with darker green freckles in transverse. bands. White bands on segments 1 and 4. Viewed from the side the abdomen is green with a mid-body white line running irregularly through all segments. 

The rostrum is strikingly bright green and makes a useful identification feature. Eye white with a black centre. 

The antennae are green. 

The pincers are marbled green with pale pollex and dactyl. 

The walking legs are grey-green with pale joints. 

The chelate second legs are grey-green with pale joints. 

The tail fan scutes are pale green with dark green margins. 

Identifying Features

Speckled green shrimp in shallow water on reef

Bright green rostrum and antennae

Green and white marbled pincers with pale white to pink tips. 

Similar Shrimps

The Pale Marbled Shrimp is found in similarly shallow water but is grey-green with transverse darker markings rather than freckles. It has a grey-green rostrum. It is more often found in shallow, silty habitats. 

Nomenclature

Undescribed species apart from our records from Australia and the Solomon Islands. 

Ecology

HABITAT 

Preferred substrate 

Fine coral rubble and sand

Depth range

Usually in shallow water, usually in less than 5 metres

Proximity to reef

On the top of lagoon patch reefs

NATURAL HISTORY

Usually associated with gobies of the genus Ctenogobiops, small species that are commonly found in the shallowest part of the reef. 

Distribution

Published distribution: None

Our records: 

Australia; Flynn Reef, Opal Reef, Norman Reef, Lizard Island, South Direction Island, Ribbon Reefs 3 & 9, Outer Whitsunday Reefs. 

Solomon Islands; Ghizo, Kolombangara, Santa Isabel Island, Nggela Islands. 

Associated Goby species

Green Shrimp with Amblyeleotris guttata, Blackchest Shrimpgoby
Amblyeleotris guttata, Blackchest Shrimpgoby
Green Shrimp with Cryptocentrus leptocephalus, Pinkspot Shrimpgoby
Cryptocentrus leptocephalus, Pinkspot Shrimpgoby
Green Shrimp with Ctenogobiops aurocingulus, Goldstreaked Shrimpgoby
Ctenogobiops aurocingulus, Goldstreaked Shrimpgoby
Green Shrimp with Ctenogobiops feroculus, Sand Shrimpgoby
Ctenogobiops feroculus, Sand Shrimpgoby
Green Shrimp with Ctenogobiops mitodes, Thread Shrimpgoby
Ctenogobiops mitodes, Thread Shrimpgoby
Green Shrimp with Ctenogobiops pomastictus, Goldspeckled Shrimpgoby
Ctenogobiops pomastictus, Goldspeckled Shrimpgoby

Associated Shrimpgobies (six species)

Amblyeleotris guttata, Blackchest Shrimpgoby 

Cryptocentrus leptocephalus, Pinkspot Shrimpgoby

Ctenogobiops aurocingulus, Goldstreaked Shrimpgoby

Ctenogobiops feroculus, Sand Shrimpgoby

Ctenogobiops mitodes, Thread Shrimpgoby

Ctenogobiops pomastictus, Goldspeckled Shrimpgoby

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