The snowflake moray (''Echidna nebulosa''), also known as the clouded moray among many vernacular names, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of marine

eel Eels are ray-finned fish belonging to the order Anguilliformes (), which consists of eight suborders, 19 families, 111 genera, and about 800 species. Eels undergo considerable development from the early larval stage to the eventual adult stage ...

of the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Muraenidae Moray eels, or Muraenidae (), are a family of eels whose members are found worldwide. There are approximately 200 species in 15 genera which are almost exclusively marine, but several species are regularly seen in brackish water, and a few are f ...

. It has blunt teeth ideal for its diet of crustaceans, a trait it shares with the

zebra moray The zebra moray (''Gymnomuraena zebra'') is a species of marine fish in the family Muraenidae. It is the only member of the genus ''Gymnomuraena'', though it sometimes has been included in ''Echidna'' instead. Description The zebra moray is co ...

(''Gymnomuraena zebra''). Its Hawaiian name is puhi-kapa, which originates from

King Kamehameha I Kamehameha I (; Kalani Paiea Wohi o Kaleikini Kealiikui Kamehameha o Iolani i Kaiwikapu kaui Ka Liholiho Kūnuiākea; – May 8 or 14, 1819), also known as Kamehameha the Great, was the conqueror and first ruler of the Kingdom of Hawaii. T ...

’s nickname. The genus name is derived from the Greek word ''

echidna Echidnas (), sometimes known as spiny anteaters, are quill-covered monotremes (egg-laying mammals) belonging to the family Tachyglossidae . The four extant species of echidnas and the platypus are the only living mammals that lay eggs and the ...

'' meaning "viper", and the species name, ''nebulosa,'' originates from the Latin word ''nebulosus'' meaning "misty" or "cloudy". It is widespread throughout 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 ...

area from the eastern coast of Africa throughout

Micronesia Micronesia (, ) is a subregion of Oceania, consisting of about 2,000 small islands in the western Pacific Ocean. It has a close shared cultural history with three other island regions: the Philippines to the west, Polynesia to the east, and ...

including the

Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; T ...

and to

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

. The species is also found in the eastern Central Pacific from southern

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

, and from

Costa Rica Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ...

to northern

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

.McCosker, J.E. and R.H. Rosenblatt, 1995. Muraenidae. Morenas. p. 1303-1315. In Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. This species reaches a length of but its common size is . They live at depths ranging from 1 and 48 meters.

Description and biology

The snowflake moray has a blunt white snout that goes into a yellowish, brown, and black striped speckled pattern. They have a dorsal fin that runs the length of its body. Protruding out of their snout, they have two yellow tubular nostrils angled down and another pair closer to their eyes.

Moray eel Moray eels, or Muraenidae (), are a family of eels whose members are found worldwide. There are approximately 200 species in 15 genera which are almost exclusively marine, but several species are regularly seen in brackish water, and a few are f ...

s' eyesight is poor, and their heightened sense of smell compensates for this. They have small blunt teeth rather than sharp teeth. Their diet consists mainly of

crustaceans Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...

. The snowflake moray, along with other species of morays, have

pharyngeal jaw Pharyngeal jaws are a "second set" of jaws contained within an animal's throat, or pharynx, distinct from the primary or oral jaws. They are believed to have originated as modified gill arches, in much the same way as oral jaws. Originally hypo ...

s, which are a second set of jaws located in the throat or

pharynx The pharynx (plural: pharynges) is the part of the throat behind the mouth and nasal cavity, and above the oesophagus and trachea (the tubes going down to the stomach and the lungs). It is found in vertebrates and invertebrates, though its struc ...

. This species is an unconfirmed

protogynous hermaphrodite Sequential hermaphroditism (called dichogamy in botany) is a type of hermaphroditism that occurs in many fish, gastropods, and plants. Sequential hermaphroditism occurs when the individual changes its sex at some point in its life. In particular, ...

, meaning that they are able to change sex during their lifetime. Snowflake morays are also scale-less, secreting a mucus over their skin that allows for easy maneuverability in and around holes in their environment. This species reaches a length of 100 centimeters (39 in) but is commonly found at a length of 50 centimeters (20 in).

Distribution

This species is distributed throughout the

area from the eastern coast of Africa throughout

including the

and to

. It is also found in the eastern Central Pacific from southern

, and from

to northern

Habitat

The snowflake moray is often found residing in

seagrass beds A seagrass meadow or seagrass bed is an underwater ecosystem formed by seagrasses. Seagrasses are marine (saltwater) plants found in shallow coastal waters and in the brackish waters of estuaries. Seagrasses are flowering plants with stems and ...

with rock rubble, rocky shallows,

intertidal The intertidal zone, also known as the foreshore, is the area above water level at low tide and underwater at high tide (in other words, the area within the tidal range). This area can include several types of Marine habitat, habitats with var ...

reef flats, and

tide pools A tide pool or rock pool is a shallow pool of seawater that forms on the rocky intertidal shore. Many of these pools exist as separate bodies of water only at low tide. Many tide pool habitats are home to especially adaptable animals that ...

. They live at depths ranging from 1 and 48 meters.

In the aquarium

The snowflake moray is a very commonly kept

saltwater eel The Congridae are the family of conger and garden eels. Congers are valuable and often large food fishes, while garden eels live in colonies, all protruding from the sea floor after the manner of plants in a garden (thus the name). The family inc ...

. They are very hardy and well-suited to life within an aquarium. Up to 36" in length in captivity, the snowflake moray requires an aquarium that is larger than 20 gallons (40–50 gallons when full grown) with a tight-fitting lid, as these eels (and all other eels) are good at escaping and can fit through surprisingly small holes in aquarium lids. The snowflake eel has been known to live to 15 years and older in captivity. They are

carnivore A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other sof ...

s, readily accepting just about any meaty foods, including

krill Krill are small crustaceans of the order Euphausiacea, and are found in all the world's oceans. The name "krill" comes from the Norwegian Norwegian, Norwayan, or Norsk may refer to: *Something of, from, or related to Norway, a country in n ...

shrimp Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...

, silversides and

octopus An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttle ...

meat. Unless already acclimated to frozen foods, the moray eel will likely need to be fed with live ghost shrimp when first acquired. Weaning can be accomplished over time. The feeding of freshwater feeder fish (goldfish, rosy reds, etc.) will likely cause liver disease if fed to the eel, so such feeding should be avoided. It is not safe for shrimp,

crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...

s or

lobster Lobsters are a family (biology), family (Nephropidae, Synonym (taxonomy), 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 ...

s to be kept with the snowflake moray, as

crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...

s are their natural diet. Most other invertebrates, including

starfish Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish ...

anemone ''Anemone'' () is a genus of flowering plants in the buttercup family Ranunculaceae. Plants of the genus are commonly called windflowers. They are native to the temperate and subtropical regions of all continents except Australia, New Zealand an ...

s and

sea urchin Sea urchins () are spiny, globular echinoderms in the class Echinoidea. About 950 species of sea urchin live on the seabed of every ocean and inhabit every depth zone from the intertidal seashore down to . The spherical, hard shells (tests) of ...

s, can safely be kept with them. Snowflake morays are reef safe and will not bother

coral Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and sec ...

s, though these eels are messy eaters and will require strong filtration and a relatively large

protein skimmer A protein skimmer or foam fractionator is a device used to remove organic compounds such as food and waste particles from water. It is most commonly used in commercial applications like municipal water treatment facilities and public aquariums. Sm ...

for the long-term health of any corals housed in their aquarium. The moray eel will likely consume very small fish such as

damselfish Damselfish are those within the subfamilies Abudefdufinae, Chrominae, Lepidozyginae, Pomacentrinae, and Stegastenae within the family Pomacentridae. Most species within this group are relatively small, with the largest species being about 30 ...

. Compatible tankmates for the snowflake moray eel include other relatively large, aggressive fish, such as

lionfish ''Pterois'' is a genus of venomous marine fish, commonly known as lionfish, native to the Indo-Pacific. Also called firefish, turkeyfish, tastyfish, or butterfly-cod, it is characterized by conspicuous warning coloration with red, white, crea ...

tangs TANGS is a department store located on Orchard Road in Singapore, owned by C.K. Tang Limited. The store is regarded as a principal shopping destination in the city, comparable to Bloomingdale's in New York City and Selfridges Selfridges, a ...

triggerfish Triggerfish are about 40 species of often brightly colored fish of the family Balistidae. Often marked by lines and spots, they inhabit tropical and subtropical oceans throughout the world, with the greatest species richness in the Indo-Pacifi ...

wrasse The wrasses are a family, Labridae, of marine fish, many of which are brightly colored. The family is large and diverse, with over 600 species in 81 genera, which are divided into 9 subgroups or tribes. They are typically small, most of them le ...

s, and possibly even other snowflake moray eels if they are both introduced to the tank at the same time. Snowflake moray eels can inflict a severe bite.

References

External links

* * * {{Taxonbar, from=Q614326 Echidna (fish) Fish of Japan Fish of Hawaii Fish described in 1789 Taxa named by Jonas Niclas Ahl