| Salvelinus inframundus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Salmoniformes |
| Family: | Salmonidae |
| Genus: | Salvelinus |
| Species: | S. inframundus |
| Binomial name | |
| Salvelinus inframundus Regan, 1909 | |
Salvelinus inframundus, also known as Orkney charr is a cold-water fish in the family Salmonidae which is endemic to Scotland.
Salvelinus inframundus has the following characteristics which in combination make this taxon different from other "Arctic charr" in Great Britain. It has a relatively shallow body which is less than a fifth of its body length, it has an inferiorly positioned mouth, the pectoral fins are 67–88% the length of its head and there are 8–9 10 soft rays in the dorsal fin with 8–9 soft rays in the anal fin. It has moderately large teeth, 9–11 branchiostegals, 13–14 gill rakers, 188–200 lateral scales and 63–64 vertebrae. [2] Other distinguishing features cited include a blunt snout; steel-grey colour on the sides with a white to pinkish or bright orange belly; there are numerous whitish spots along the flanks, mostly on the upper half of body. The pectoral and anal fins are orange-brown to orange-red while the pelvic fins can be cherry-red, and all have a white leading edge. [3]
This species is known from specimens fished in Heldale Water, Hoy Island, Orkney, Scotland. It is considered locally extinct there since 1908 though. [3]
This rare char could be considered a threatened species. It has been found recently in Loch Mealt, on the Isle of Skye. [3]
Since the impact of Canadian Arctic char fish farming in the loch upon the native char population is unknown and the taxonomic identity of the char deemed as Salvelinus inframundus is lacking essential information, a full IUCN Red List assessment cannot be made and the species is considered data deficient. [1]
Salevlinus inframundus was first formally described by the English ichthyologist Charles Tate Regan (1878–1943) in 1909 with the type locality given as Hellyal Lake, the former name of Heldale Water on the Isle of Hoy in Orkney. [4] The specific name of this species is a compound of infra meaning "below" and mundus meaning "world" , i.e. "underworld", and is a reference to Hellyal which is derived from the Norse goddess of the underworld Hel. [5] There is some controversy over the exact taxonomic status of the populations of charr which are found in lakes all over Europe and which show disjunct distributions and wide phenotypic variations. Some authorities take the view that there is a single species in Europe and that almost all populations fall within the subspecies Salvelinus alpinus alpinus and that the variations are due to non taxonomic adaptation to the local conditions. Other workers have accepted each population as a species, 15 of which have been recognised in Britain and Ireland. [2]
The bull trout is a char of the family Salmonidae native to northwestern North America. Historically, S. confluentus has been known as the "Dolly Varden", but was reclassified as a separate species in 1980. Bull trout are listed as a threatened species under the U.S. Endangered Species Act (1998) and as vulnerable on the IUCN Red List of Threatened Species.
The Arctic char or Arctic charr is a cold-water fish in the family Salmonidae, native to alpine lakes and arctic and subarctic coastal waters. Its distribution is Circumpolar North. It spawns in freshwater and populations can be lacustrine, riverine, or anadromous, where they return from the ocean to their fresh water birth rivers to spawn. No other freshwater fish is found as far north; it is, for instance, the only fish species in Lake Hazen on Ellesmere Island in the Canadian Arctic. It is one of the rarest fish species in Great Britain and Ireland, found mainly in deep, cold, glacial lakes, and is at risk from acidification. In other parts of its range, such as the Nordic countries, it is much more common, and is fished extensively. In Siberia, it is known as golets and it has been introduced in lakes where it sometimes threatens less hardy endemic species, such as the small-mouth char and the long-finned char in Elgygytgyn Lake.
The Dolly Varden trout is a species of salmonid fish native to cold-water tributaries of the Pacific Ocean in Asia and North America. It belongs to the genus Salvelinus, or true chars, which includes 51 recognized species, the most prominent being the brook, lake and bull trout, as well as Arctic char. Although many populations are semi-anadromous, fluvial and lacustrine populations occur throughout its range. It is considered by taxonomists as part of the Salvelinus alpinus or Arctic char complex, as many populations of bull trout, Dolly Varden trout and Arctic char overlap.
Salvelinus is a genus of salmonid fish often called char or charr; some species are called "trout". Salvelinus is a member of the subfamily Salmoninae within the family Salmonidae. The genus has a northern circumpolar distribution, and most of its members are typically cold-water fish that primarily inhabit fresh waters. Many species also migrate to the sea.
The cherubfish, also known as the pygmy angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the western Atlantic Ocean.
Scorpaena cardinalis, the eastern red scorpionfish, grandfather hapuku, cardinal scorpionfish, Cook's scorpionfish, Cook's rockcod, Kermadec scorpionfish, Northern scorpionfish, red scorpion fish, red scorpion-cod or Sandy-bay cod, is a species of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. It is found in the southwestern Pacific Ocean.
Bovichtus variegatus, the thornfish, is a species of marine ray-finned fish belonging to the family Bovichtidae, the temperate icefishes or thornfishes. It is endemic to New Zealand.
Helicolenus percoides, the reef ocean perch, coral cod, coral perch, Jock Stewart, kuriarki, ocean perch, red gurnard perch, red gurnard scorpionfish, red ocean perch, red perch, red rock perch, scarpee or sea perch, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, part of the family Scorpaenidae. It is found in the southwestern Pacific Ocean.
Centropyge potteri, commonly known as the russet angelfish, Potter's angelfish or Potter's pygmy angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae. It is found in the central Pacific Ocean.
The bicolored foxface, also known as the Uspi rabbitfish, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It is found at coral reefs in Fiji in the Pacific Ocean. It occasionally makes its way into the aquarium trade.
Salvethymus svetovidovi, also called the long-finned charr, is a species of salmonid fish. It is endemic to Elgygytgyn Lake in Chukotka, Far East of Russia, together with another char species, the small-mouth char Salvelinus elgyticus. A third char species in the same lake is the Boganid charSalvelinus cf. boganidae.
The humpback red snapper, the paddletail, paddletail snapper or hunchback snapper, is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It has a wide Indo-West Pacific distribution. It is a commercially important species, as well as being sought after as a game fish. It is also a popular species for display in public aquaria. It has been reported to cause ciguatera poisoning.
Loch Mealt is an inland fresh-water loch on the Isle of Skye in Scotland. It lies close to Ellishadder and south of Staffin, on the eastern side of the Trotternish peninsula.
Salvelinus killinensis, also known as Haddy charr is a variety of charr found in certain lakes in Scotland.
Salvelinus umbla, also known as lake char, is a species of char found in certain lakes of the region of the Alps in Europe.
Richardsonichthys, is a monotypic genus of marine ray-finned fish belonging to the subfamily Tetraroginae, the waspfishes, which is classified as part of the family Scorpaenidae, the scorpionfishes and their relatives. The only species in the genus is the whiteface waspfish, also known as the whitebelly roguefish, rouge fish, Torres Strait soldier fish or Richardson's waspfish. This species is native to reefs of the Indian Ocean and the western Pacific Ocean.
Chaetodon rainfordi, Rainfords's butterflyfish, also known as the gold-barred butterflyfish or the Northern butterflyfish, is a species of marine ray-finned fish, a butterflyfish, belonging to the family Chaetodontidae. It is found in the southwestern Pacific Ocean where it is associated with coral reefs.
The Coomsaharn char is a species of lacustrine char fish in the family Salmonidae.
Hoy and West Mainland is a national scenic area (NSA) covering parts of the islands of Hoy and Mainland in the Orkney Islands of Scotland, as well as parts of the surrounding sea. It is one of 40 such areas in Scotland, which are defined so as to identify areas of exceptional scenery and to ensure its protection by restricting certain forms of development. The Hoy and West Mainland NSA covers 24,407 ha in total, consisting of 16,479 ha of land with a further 7928 ha being marine.
The Sommen charr is a population or subspecies of Arctic charr found in Lake Sommen. It is one of twenty-two species of fish found in the lake.
Trout and char of the world | ||
|---|---|---|
| Trout of Europe and Atlantic basin Salmo |    | |
| Trout of the Pacific basin Oncorhynchus | ||
| True char Salvelinus | ||
 Media related to Trout at Wikimedia Commons | ||
