Tripterygion melanurus is a species of fish in the family Tripterygiidae, the threefin blennies. It is widespread in the Mediterranean Sea, where it occurs around the Balearic Islands and off the coasts of southern Sardinia, Algeria, Tunisia, Israel, Lebanon, Greece, Cyprus, and southern Turkey.It is a marine subtropical demersal fish measuring up to 5.3 centimeters in length.
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 sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.
Threefin or triplefin blennies are blennioids, small perciform marine fish of the family Tripterygiidae. Found in tropical and temperate waters of the Atlantic, Pacific and Indian Oceans, the family contains about 150 species in 30 genera. The family name derives from the Greek tripteros meaning "with three wings".
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Southern Europe and Anatolia, on the south by North Africa and on the east by the Levant. Although the sea is sometimes considered a part of the Atlantic Ocean, it is usually identified as a separate body of water. Geological evidence indicates that around 5.9 million years ago, the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years, the Messinian salinity crisis, before being refilled by the Zanclean flood about 5.3 million years ago.
Drymarchon is a genus of large nonvenomous colubrid snakes, commonly known as indigo snakes or cribos, found in the Southeastern United States, Central America, and South America.
The blacktailed spurdog is a dogfish, a member of the family Squalidae, found around New Caledonia in the central Pacific Ocean, at depths from 320 to 320 m. Its length is up to 75 cm.
Tripterygion is a genus of fish in the family Tripterygiidae, the threefin blennies.
Batrochoglanis is a small genus of catfishes of the family Pseudopimelodidae.
The black-tailed mouse is a species of rodent in the family Cricetidae endemic to Mexico.
The crag chilia is a species of bird in the Furnariidae family. It is endemic to central Chile, found between approximately 27° and 35° south latitudes. There are two subspecies, O. m. melanurus and O. m. atacamae.
The black-tailed trogon is a species of bird in the family Trogonidae. It is found in humid forest in the Amazon basin, north-western South America and adjacent Panama. The taxon mesurus from western Ecuador and far north-western Peru was formerly considered a subspecies of the black-tailed trogon, but is now considered a separate species, the Ecuadorian trogon.
Mixcoatlus melanurus is a venomous pitviper species endemic to the mountains of southern Mexico. No subspecies are currently recognized.
Dascyllus melanurus, known commonly as the four stripe damselfish, blacktail dascyllus, humbug damselfish, blacktail damselfish, and blacktail humbug, is a species of fish in the family Pomacentridae. It is native to the western Pacific Ocean. It is sometimes kept as an aquarium pet.
The tail-spot wrasse, Halichoeres melanurus, is a species of wrasse in the western Pacific from Japan to Samoa and Tonga and south to the Great Barrier Reef. This species is found along rocky shores or on coral reefs at depths from 1 to 15 m. It can reach 12 cm (4.7 in) in total length. This species is popular for display in public aquaria and can be found in the aquarium trade.
The Middle American indigo snake, also known as the blacktail cribo, is a large, nonvenomous, colubrid snake species found in the southwestern United States, Mexico, Central America, and northern South America. In addition to the nominotypical subspecies, it has one recognized subspecies, D. m. erebennus commonly known as the Texas indigo snake.
The red-black triplefin is a species of fish in the family Tripterygiidae, the threefin blennies. It is widespread in the eastern Atlantic Ocean and the Mediterranean Sea. In the Black Sea it occurs off the coasts of the Crimea and Ukraine.
The yellow triplefin, also known as the Abel's triplefin in South Africa, is a species of triplefin in the genus Enneapterygius. Males in this species can reach a maximum length of 2.5 centimetres. The blennies are generally bright yellow in colour, and males have black heads. They feed mostly on benthic invertebrates.
The Hawaiian blackhead triplefin, also known as the Hawaiian triplefin in Hawaii, is a species of triplefin blenny in the genus Enneapterygius. It is a tropical blenny found in coral reefs in the Pacific Ocean, from the Hawaiian Islands, French Frigate Shoals, Laysan Island, and Midway Atoll. Blennies in this species swim at a depth range of 1–23 metres, and inhabit dead coral and rock.
The black-faced blenny is a small benthic fish from the family Tripterygiidae (triplefin-blennies). It occurs at depths of -3 to -40 m and lives on the substrate under large rocks, cliffs or other overhangs.
Tripterygion tartessicum is a species of fish in the family Tripterygiidae, the threefin blennies. It is widespread in the Mediterranean Sea and eastern Atlantic Ocean, where it occurs along the southern coast of Spain and from Morocco to Tunisia. It is a tropical demersal fish measuring up to 7.7 centimeters in length.
Chatrabus is a genus of toadfishes native to the Atlantic coast of southern Africa.
Dibrachichthys melanurus is a species of four-armed frogfish found in the eastern Indian Ocean and western Pacific Ocean near to Indonesia and Australia where they are found over soft bottoms at depths of 6 to 146 metres. The males of this species grow to a length of 5.7 centimetres (2.2 in) SL while the females grow to a length of 5.6 centimetres (2.2 in) SL. This species is the only known member of its genus.
Spicara is a genus of picarels native to the eastern Atlantic Ocean and the western Indian Ocean.
Hemigobius mingi, commonly known as the banded goby, is a species of goby found in brackish and marine waters in the South-east Asia. The Catalog of Fishes treats Hemigobius mingi as a synonym of Hemigobius melanurus.
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