Reef lobsters, ''Enoplometopus'', are a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of small

lobster Lobsters are a family (Nephropidae, synonym Homaridae) of marine crustaceans. They have long bodies with muscular tails and live in crevices or burrows on the sea floor. Three of their five pairs of legs have claws, including the first pair, ...

s that live on reefs in the

Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...

Caribbean The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean ...

and warmer parts of the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

Description

Species of ''Enoplometopus'' occur from

coral reef A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of Colony (biology), colonies of coral polyp (zoology), polyps held together by calcium carbonate. Most coral reefs are built from stony corals, wh ...

s at depths of less than to rocky reefs at depths of . They are brightly coloured, with stripes, rings, or spots. They are typically mainly red, orange, purplish and white. Reef lobsters are small (depending on species, up to ),

nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ...

(spending the day in caves or crevices), and very timid. The species can be distinguished by their colouration and morphology. Eryma mandelslohi (Krebs) - Oberer Brauner Jura - Bissingen unter Teck

Eryma mandelslohi (Krebs) - Oberer Brauner Jura - Bissingen unter Teck

As a result of their bright colours, they are popular in the

aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ...

trade, and unregulated collection combined with destruction of coral reefs may threaten some species. Due to uncertainty over the impact of these potential threats, the majority are considered

data deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessaril ...

by the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

. Reef lobsters are distinguished from clawed lobsters (family Nephropidae) by having full

chelae A chela ()also called a claw, nipper, or pinceris a pincer-like organ at the end of certain limbs of some arthropods. The name comes from Ancient Greek , through New Latin '. The plural form is chelae. Legs bearing a chela are called chelipeds. ...

(''claws'') only on the first pair of

pereiopod The decapod ( crustaceans such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in variou ...

s, the second and third pairs being only subchelate (where the last segment of the

appendage An appendage (or outgrowth) is an external body part, or natural prolongation, that protrudes from an organism's body. In arthropods, an appendage refers to any of the homologous body parts that may extend from a body segment, including ante ...

can press against a short projection from the penultimate one). Clawed lobsters have full claws on the first three pereiopods. Males, unlike those of nephropoid lobsters, have an extra lobe on the second

pleopod The decapod ( crustaceans such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in variou ...

, which is assumed to have some function in

reproduction Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parent" or parents. Reproduction is a fundamental feature of all known life; each individual or ...

. Reef lobsters have a shallow cervical groove while clawed lobsters have a deep cervical groove. Although there is no

fossil record A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

of reef lobsters, there is some evidence that they may be related to the

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus '' Eryma'' which lived from the Permo-

Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest per ...

to the late

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...

Species

The genus contains the following species: *'' Enoplometopus antillensis'' Lütken, 1865 *'' Enoplometopus callistus'' Intès and Le Loeuff, 1970 *'' Enoplometopus chacei'' Kensley and

Child A child ( : children) is a human being between the stages of birth and puberty, or between the developmental period of infancy and puberty. The legal definition of ''child'' generally refers to a minor, otherwise known as a person young ...

, 1986 *'' Enoplometopus crosnieri''

Chan Chan may refer to: Places *Chan (commune), Cambodia * Chan Lake, by Chan Lake Territorial Park in Northwest Territories, Canada People *Chan (surname), romanization of various Chinese surnames (including 陳, 曾, 詹, 戰, and 田) *Chan Caldw ...

and Yu, 1998 *'' Enoplometopus daumi'' Holthuis, 1983 *'' Enoplometopus debelius'' Holthuis, 1983 *'' Enoplometopus gracilipes'' ( De Saint Laurent, 1988) *'' Enoplometopus holthuisi'' Gordon, 1968 *'' Enoplometopus occidentalis'' (

Randall Randall may refer to the following: Places United States *Randall, California, former name of White Hall, California, an unincorporated community * Randall, Indiana, a former town *Randall, Iowa, a city *Randall, Kansas, a city *Randall, Minnesot ...

, 1840) *'' Enoplometopus pictus'' A. Milne Edwards, 1862 *'' Enoplometopus voigtmanni'' Türkay, 1989

References

{{Taxonbar, from=Q634316 Decapods