Context: Trout is the common name for a number of species of freshwater fish belonging to the genera "Oncorhynchus", "Salmo" and "Salvelinus", all of the subfamily Salmoninae of the family Salmonidae. The word "trout" is also used as part of the name of some non-salmonid fish such as "Cynoscion nebulosus", the spotted seatrout or speckled trout., Salmo is a genus of fish in the salmon family Salmonidae that includes the European species of salmon and trout, among them the familiar Atlantic salmon "Salmo salar" and the brown trout "Salmo trutta". The natural distribution of "Salmo" also extends to Northern Africa and to Western Asia around the Black Sea basin. The single "Salmo" species naturally found in the Atlantic North America is the Atlantic salmon, whereas the salmon and trout of the Pacific basin belong to another genus, "Oncorhynchus". The generic name "Salmo" derives from the Latin "salm" (salmon). The number of distinct species and subspecies in "Salmo" is a debated issue. Atlantic salmon and brown trout are widespread species, while most of the other taxa are narrowly distributed forms endemic to single watersheds., The freshwater whitefish are fishes of the subfamily Coregoninae , which contains whitefishes ( both freshwater and anadromous ) and ciscoes , and is one of three subfamilies in the salmon family Salmonidae . Apart from the subfamily Coregoninae , the family Salmonidae includes the salmon , trout , and char species of the subfamily Salmoninae , and grayling species of the subfamily Thymallinae . Freshwater whitefish are distributed mainly in relatively cool waters throughout the northern parts of the Northern Hemisphere . The Coregoninae subfamily consists of three nominal genera : Coregonus Linnaeus , 1758 -- whitefishes and ciscoes , which according to some authors number more than 60 species . There are differing opinions on the classification of some species within the genus and the overall number of species . Some species in Arctic regions of Asia and North America forage in marine waters . Prosopium Jordan , 1878 -- round whitefishes , which includes six species , three of which occur only in a single lake . Stenodus Richardson , 1836 -- inconnus , which includes two species , sometimes considered a single species with two subspecies . Phylogenetically , Stenodus is not distinct from Coregonus ., Salmon is the common name for several species of ray-finned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling and whitefish. Salmon are native to tributaries of the North Atlantic (genus "Salmo") and Pacific Ocean (genus "Oncorhynchus"). Many species of salmon have been introduced into non-native environments such as the Great Lakes of North America and Patagonia in South America. Salmon are intensively farmed in many parts of the world., Salmonidae is a family of ray-finned fish, the only living family currently placed in the order Salmoniformes. It includes salmon, trout, chars, freshwater whitefishes, and graylings, which collectively are known as the salmonids. The Atlantic salmon and trout of the genus "Salmo" give the family and order their names., Subject: freshwater whitefish, Relation: parent_taxon, Options: (A) coregoninae (B) cynoscion (C) grayling (D) oncorhynchus (E) salmo (F) salmo trutta (G) salmon (H) salmonidae (I) salmoniformes
Output: salmoniformes