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Virgularia

Virgularia loveni Utinomi, 1971. Virgularia glacialis Kolliker, 1870. Virgularia galapagensis Hickson, 1930. Virgularia abies Kolliker, 1870. Virgularia agassizi Studer, 1894. Virgularia gustaviana Herklots, 1863. Virgularia kophameli May, 1899. ...

Abraliopsis

Abraliopsis is a genus of squid in the family Enoploteuthidae comprising 11 nominal species. Species are characterised by the presence of photophores on arm pair IV. Suckers are absent from this arm. The type species is Abraliopsis hoylei.

Batoteuthis

Batoteuthis skolops, the bush-club squid, is the single rare species in genus Batoteuthis, which is the only genus in family Batoteuthidae. The squid is found in Antarctic waters, and reaches a mantle length of at least 350 mm. Some features of t ...

Bolitaena

Bolitaena is a genus of pelagic octopods from the subfamily Bolitaeninae in the family Amphitretidae. It contains two species, a third species Bolitaena microcotyla is now regarded as a synonym of Haliphron atlanticus. The genus contains biolumin ...

Chiroteuthis

Chiroteuthis is a genus of chiroteuthid squid, comprising two subgenera. The hectocotylus is absent from all members of the genus, instead, a penis extending from the mantle opening is utilised. The genus is characterised by enlarged, lidded phot ...

Cycloteuthis

Cycloteuthis is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus Discoteuthis by the presence of a tail on the mantle. The species C. akimushkini is currently considered a junior synonym of C. sirventi, however th ...

Discoteuthis

Discoteuthis is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus Cycloteuthis by the absence of a tail on the mantle. The genus occurs in tropical and subtropical oceans worldwide. The genus contains bioluminescen ...

Echinoteuthis

Echinoteuthis is a genus of whip-lash squid containing approximately three to five species. Some teuthologists consider Idioteuthis synonymous with this taxon. The genus contains bioluminescent species.

Enoploteuthis

Enoploteuthis is a genus of squid in the family Enoploteuthidae. The species of Enoploteuthis are most easily recognised by having a larger tail when compared to the other genera in the Enoploteuthidae. The tails size is emphasised not having the ...

Galiteuthis

Galiteuthis is a genus of glass squids from the family Cranchiidae and the subfamily Taoniinae. Squids in the genus Galiteuthis are large squids with mantle lengths measuring up to 660mm, although it has been suggested that mantle length could re ...

Gastrochaena

Gastrochaena is a genus of saltwater clams, marine bivalve molluscs in the family Gastrochaenidae. The type species of this genus is Gastrochaena cuneiformis.

Gonatus

Gonatus is a genus of squid in the family Gonatidae, comprising twelve species, and therefore containing the most species in the family. Adult squid belonging to species in this genus are notable for their lack of tentacles. The genus contains bi ...

Hinea brasiliana

Hinea brasiliana, common name the yellow-coated clusterwink, is a species of small sea snail, a gastropod mollusc in the family Planaxidae. It is native to New Zealand and southeastern Australia where it is found in the littoral zone of rocky sho ...

Histioteuthis

Histioteuthis is a genus of squid and the only member of the Histioteuthidae family. It goes by the common name cock-eyed squid, because in all species the right eye is normal-sized, round, blue and sunken, whereas the left eye is at least twice ...

Inioteuthis

Genus Inioteuthis Inioteuthis japonica Tilesius in Ferussac & dOrbigny, 1845. Native to China, Taiwan, and Japan. Inioteuthis capensis Voss, 1962. Native to Namibia and South Africa. Inioteuthis maculosa Goodrich, 1896. Native to India, Sri Lanka ...

Japetella

Japetella is a genus of pelagic octopods from the subfamily Bolitaeninae in the family Amphitretidae. It contains at least one species but another two have been questionably raised with Japetella heathi being of doubtful validity, although curren ...

Kaloplocamus

Kaloplocamus is a genus of sea slugs, specifically nudibranchs, shell-less marine gastropod molluscs in the family Polyceridae. It contains a bioluminescent species.

Latia

Latia is a genus of very small, air-breathing freshwater snails or limpets, aquatic pulmonate gastropod molluscs in the superfamily Chilinoidea. Latia is the only genus in the family Latiidae. Species in this genus-the only bioluminescent freshwa ...

Leachia

Leachia is a genus containing eight species of glass squids. The genus was formerly divided into two subgenera: Leachia and Pyrgopsis, but is no longer. Members of this genus live in tropical and subtropical waters around the world. Spin up to 20 ...

Liguriella

Liguriella is a genus of glass squids, the genus is probably monotypic, the only species being Liguriella podophthalma. The other named species Liguriella pardus, which was described by S. Stillman Berry in 1916, is cited as a taxon inquirendum b ...

Liocranchia

Liocranchia is a genus of glass squid from the family Cranchiidae. They are moderate-sized with a long, spindle-shaped mantle which tapers to a point at the rear and they can attain mantle lengths of 250 mm. The species in Liocranchia have a cosm ...

Mastigoteuthis

Mastigoteuthis is a genus of whip-lash squid containing at least seven valid species. Some teuthologists consider Idioteuthis synonymous with this taxon. The genus contains bioluminescent species.

Megalocranchia

Some members of the genus Megalocranchia can reach large sizes, up to 1800mm in the case of M. fisheri. Young paralarvae often resemble other members of the Cranchiidae, having transparent bodies to aid in camouflage. Where the internal organs ca ...

Octopoteuthis

Octopoteuthis is a genus of squid. It is one of two genera in the family Octopoteuthidae, the other being Taningia. Both Octopoteuthis and Taningia are characterized by their lack of tentacles for the majority of their life cycle, and have traits ...

Onychoteuthis

Onychoteuthis is a genus of squid in the family Onychoteuthidae. The type species is Onychoteuthis bergii. While the genus is found worldwide in tropical and subtropical oceans, they can also occur in the North Pacific Ocean. There were previousl ...

Ornithoteuthis

Ornithoteuthis is a small genus of squid, with two species, from the family Ommastrephidae, the "flying squids", the two species in this genus are known as "bird squids". They are relatively small squid, with mantle lengths of around 100–200 mm, ...

Pholas dactylus

Pholas dactylus, or common piddock, is a bioluminescent clam-like species of marine mollusc found on the coasts of the North Atlantic and the Mediterranean Sea. It bores into gneiss. It was once a highly esteemed food in Europe. It is sensitive t ...

Planaxis

Species within the genus Planaxis include: Planaxis sulcatus Born, 1791. Planaxis suturalis E.A. Smith, 1872. Planaxis savignyi Deshayes, 1844. Planaxis obsoletus Menke, 1851. Planaxis nancyae Petuch, 2013. Planaxis akuana Rehder, 1980. Planaxis ...

Plocamopherus

Plocamopherus is a genus of sea slugs, specifically nudibranchs, shell-less marine gastropod molluscs in the family Polyceridae, subfamily Triophinae. A unique character of Plocamopherus species is a globular bioluminescent organ at the tip of th ...

Pterygioteuthis

Pterygioteuthis is a genus of squid in the family Pyroteuthidae. Members are differentiated from the genus Pyroteuthis due to size and head shape. The genus is characterised by the presence of a lidded photophore over each eye.

Stoloteuthis

Stoloteuthis is a small genus of bobtail squid in the family Sepiolidae and the subfamily Heteroteuthidinae with one species, Stoloteuthis leucoptera, which is found in the western and eastern Atlantic Ocean, the Mediterranean Sea, the Indian Oce ...

Taningia

Taningia is a genus of squid in the family Octopoteuthidae. It has one confirmed species, Taningia danae. Another species, Taningia persica, is suggested, but has been questioned. The genus is named after Danish fisheries biologist Åge Vedel Tåning.

Taonius

Taonius is a small genus of glass squid. Although it comprises only three recognised species, it has been suggested there may be as many as five species. Taonius borealis is found in the North Pacific Ocean and Taonius pavo is found in the Atlant ...

Whip-lash squid

The Mastigoteuthidae, also known as whip-lash squid, are a family of small deep-sea squid. Approximately 20 known species in six genera are represented, with members found in both the mesopelagic and bathypelagic zone of most oceans. Originally d ...

Deuteraphorura

Deuteraphorura hategana. Deuteraphorura ossaria. Deuteraphorura oregonensis. Deuteraphorura ghidinii. Deuteraphorura silvaria. Deuteraphorura dunaria. Deuteraphorura dianae. (Deuteraphorura Диана) Deuteraphorura hussoni. Deuteraphorura difficilis ...

Amblyopsidae

The Amblyopsidae are a fish family commonly referred to as cavefish, blindfish, or swampfish. They are small freshwater fish found in the dark environments of caves, springs and swamps in the eastern half of the United States. Like other troglobi ...

Amblyopsis

Amblyopsis is a genus of small fish in the family Amblyopsidae that are endemic to the central and eastern United States. Like other cavefish, they lack pigmentation and are blind. The most recently described species was in 2014. Uniquely among f ...

Caecogobius cryptophthalmus

Caecogobius cryptophthalmus is a species of goby that is endemic to underground habitats in Calbiga on the Philippine island of Samar. This species is one of two members of the genus Caecogobius, which are the only known cavefish in the Philippin ...

Draconectes narinosus

Draconectes narinosus is a species of troglobitic stone loach known only from a cave on Van Gio Island in Halong Bay, Vietnam. This species is the only known member of its genus.

Eigenmannia vicentespelaea

Eigenmannia vicentespelaea is a species of weakly electric knifefish in the family Sternopygidae. Native to the São Domingos karst area in central Brazil, it is the only known knifefish to exclusively inhabit caves. Measuring up to 12 cm long, E. ...

Garra tashanensis

Garra tashanensis is a species of ray-finned fish in the genus Garra. This cavefish is endemic to the Tashan Cave located in the Tashan region of Khuzestan Province, Iran.

Crossed-fork back golden-line fish

The crossed-fork back golden-line fish is a species of blind cave fish in the family Cyprinidae. It is endemic to the Guangxi province in southern China, and only known from an underground stream in Tiane County.

Lucifuga

Lucifuga is a genus of viviparous brotulas. Most of the species are native to caves and sinkholes in Cuba and the Bahamas, L. inopinata from deep water off the Galapagos Islands is the only exception. The four species rated by the IUCN are all co ...

Milyeringidae

Milyeringidae, the blind cave gobies, is a small family of gobies, in the order Gobiiformes. There are two genera and six species within the family, which is considered to be a subfamily of the Eleotridae by some authorities. Milyeringidae includ ...

Oreonectes macrolepis

Oreonectes macrolepis is a species of ray-finned fish, a troglobitic stone loach, in the genus Oreonectes. This cavefish is found only in Guangxi in China.

Oreonectes microphthalmus

Oreonectes microphthalmus is a species of ray-finned fish, a troglobitic stone loach, in the genus Oreonectes. This cavefish is found only in Guangxi in China.

Oreonectes retrodorsalis

Oreonectes retrodorsalis is a species of ray-finned fish, a stone loach, in the genus Oreonectes. This cavefish is found only in Guangxi in China. Some authorities places this species in the genus Yunnanilus. The specific name is a compound of th ...

Protocobitis

There are currently three recognized species in this genus: Protocobitis anteroventris J. H. Lan, 2013. Protocobitis typhlops J. X. Yang & Y. R. Chen, 1993. Protocobitis polylepis Y. Zhu, Y. J. Lu, J. X. Yang & S. Zhang, 2008.

Schistura larketensis

Schistura larketensis is a species of ray-finned fish in the genus Schistura. This cavefish is found in the East Jaintia Hills district in the Indian state of Meghalaya. It is named after the Larket village, where the fish was found inside a cave.

Schistura lingyunensis

Schistura lingyunensis is a troblobitic species of stone loach found in Shadong Cave, Lingyun County in Guangxi. It is scaleless and lacks pigmentation with degenerated eyes.

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