---
title: Marbled Snapping Shrimp (Alpheus rapax)
scientific_name: Alpheus rapax
common_name: Marbled Snapping Shrimp
taxon: Shrimps
published: 2024-11-29T22:39:39.048Z
updated: 2026-08-08T21:29:51.405Z
tags: Marbled Snapping Shrimp, Alpheus rapax, Shrimps, Red Sea, Marine Life, Diving
url: https://redseacreatures.com/taxon/invertebrate/crustaceans/shrimps/marbled-snapping-shrimp
---

# Marbled Snapping Shrimp (*Alpheus rapax*)

## Quick facts

- **Group:** Shrimps (*Caridea*)
- **Size:** 3 - 6 cm
- **Depth:** 1-10 m

The Marbled Snapping Shrimp, scientifically known as Alpheus rapax and also referred to as the Blue And Yellow Goby Shrimp or Rapacious Snapping Shrimp, is a fascinating marine creature native to the tropical waters of the Indo-Pacific region. This benthic organism typically resides at depths ranging from 1 to 10 meters (3 to 33 feet) and is characterized by its small size, measuring between 3 and 6 centimeters (1.2 to 2.4 inches) in length. The shrimp displays a distinctive light greenish coloration with a marbled pattern on its abdomen, contributing to its unique appearance.

Alpheus rapax belongs to the order Decapoda, with most members displaying separate sexes, a trait known as gonochorism. This species is known for its intriguing mating behavior, which involves a precopulatory courtship ritual that relies on olfactory and tactile cues. During this process, the shrimp engages in an indirect transfer of sperm, adding to the complexity of its reproductive strategy.

## Also known as

- **English:** blue and yellow goby shrimp, marbled snapping shrimp
- **German:** Marmorierter Knallkrebs, Rapax-Knallkrebs
- **Japanese:** トウゾクテッポウエビ

## Range

Eastern India, Madagascar, Mozambique, Mozambique Channel, Red Sea, Seychelles, South Pacific Ocean

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*Source: [Red Sea Creatures](https://redseacreatures.com/taxon/invertebrate/crustaceans/shrimps/marbled-snapping-shrimp)*
*Updated: August 8, 2026*