The Caridea, commonly known as caridean shrimp or true shrimp, are an infraorder of shrimp within the order Decapoda. This infraorder contains all species of true shrimp. They are found widely around the world in both fresh and salt water. Many other animals with similar names – such as the mud shrimp of Axiidea and the boxer shrimp of Stenopodidea – are not true shrimp, but many have evolved features similar to true shrimp.
The family Polychelidae contains thirty-eight extant species of blind, benthic lobster-like crustaceans. They are found throughout the world's tropical, sub-tropical and temperate oceans, including the Mediterranean Sea and the Irish Sea.
Palaemonidae is a family of shrimp in the order Decapoda. Many species are carnivores that eat small invertebrates, and can be found in any aquatic habitat except the deep sea. One significant genus is Macrobrachium, which contains commercially fished species. Others inhabit coral reefs, where they associate with certain invertebrates, such as sponges, cnidarians, mollusks, and echinoderms, as cleaner shrimps, parasites, or commensals. They generally feed on detritus, though some are carnivores and hunt tiny animals.
Squillidae is a family of mantis shrimp, the only family in the superfamily Squilloidea. The type genus is Squilla. It is the stomatopod family with the most genera, as follows:
Erythrosquilla is a genus of mantis shrimp, placed in its own family (Erythrosquillidae) and superfamily (Erythrosquilloidea) comprising two species:
Eurysquillidae is a family of mantis shrimp. Formerly placed in the superfamily Gonodactyloidea, it has since been recognised that eurysquillids are closer to families in the Squilloidea, and so Eurysquillidae has been placed in its own superfamily, Eurysquilloidea. It includes six genera and 30 species
Platysquilla eusebia is a species of mantis shrimp in the family Nannosquillidae, from the Mediterranean Sea and north-eastern Atlantic Ocean. It is a spearer, and grows up to 7 cm (2.8 in) long.
The Processidae are a family of shrimp, comprising 65 species in five genera, and the only family in the superfamily Processoidea. They are small, nocturnal animals, mostly living in shallow seas, particularly on grass flats. The first pereiopods are usually asymmetrical, with a claw on one, but not the other. The rostrum is generally a simple projection from the front of the carapace, with two teeth, one at the tip, and one further back.
Crangon is a genus of shrimp.
Saron is a small genus of caridean prawns from the family Thoridae, which were formerly classified as part of the Hippolytidae, the cleaner shrimps. Some species are kept in the marine aquarium trade. These are common on the reefs of the Indo-Pacific region and it is thought that there may be many more species yet to be described due to the high variability in colour observed.
Acanthosquilla is a genus of stomatopod crustacean. The American carcinologist Raymond B. Manning named and first circumscribed the genus in 1963. As of 2018, the World Register of Marine Species recognizes the following eight species:
Acanthosquilla derijardi is a species of stomatopod crustacean. Its distribution is widespread throughout the Indo-West Pacific. The species was initially described by the American carcinologist Raymond B. Manning in 1970. Its junior synonym, A. sirindhorn, was named in 1995 in honor of Princess Sirindhorn of Thailand.
Gonodactylus chiragra is a medium to large mantis shrimp that is distributed widely throughout the West Indo-Pacific.
Pariliacantha is a genus of mantis shrimp containing a single species, Pariliacantha georgeorum. The genus and species were first described by Shane T. Ahyong in 2012.
Paracrangon is a genus of deep-sea shrimp in the family Crangonidae, found on the Pacific coasts of North America, Asia, and Australia. Morphologically, they are notable for several autapomorphies, most significantly their unique lack of second pereopods, but also for their partially flexible abdomen, which allows them to assume their defensive cataleptic posture. Species also have long spines covering their carapace. They are distinctive among the Crangonid shrimp, and are almost certainly monophyletic. All species except Paracrangon echinata, the type species, are quite rare.
Erugosquilla septemdentata is a species of shrimp in the family, Squillidae, and was first described in 1994 by Shane T. Ahyong as Oratosquilla septemdentata. The name was revised to Erugosquilla septemdentata in 1995 by Raymond B. Manning.
Alima is a genus of shrimps belonging to the family Squillidae, and was first described in 1817 by William Elford Leach.
Alima pacifica is a species of shrimp in the Squillidae family, and was first described in 2001 by Shane Ahyong.
Alima maxima is a species of shrimp in the Squillidae family, and was first described in 2002 by Shane Ahyong.
Alain raymondi is a species of crab in the Pinnotheridae family. It was first described in 2008 by Ahyong and Peter Ng. The species epithet, raymondi, honours Ray Manning.
