Belongs within: Salmonidae.
The Salmoninae, trout and salmon, are salmonids with small scales, teeth on the maxilla, and less than sixteen rays in the dorsal fin.
Salmoninae
|--BrachymystaxB96
`--+--AcantholinguaB96
|--+--Salmothymus obtusirostrisB96, B50b
| `--PlatysalmoB96
`--+--+--HuchoB96
| | |--H. hucho (Linnaeus 1758)SE08
| | `--H. perryi (Brevoort 1856)I92
| `--SalvelinusB96
| |--S. alpinusF16
| | |--S. a. alpinusF16
| | |--S. a. erythinusB50a
| | `--S. a. marstoni (Garman 1893) [=Salmo marstoni]F16
| |--S. confluentusB96
| |--S. fontinalis (Mitchill 1814)KF02
| |--S. leucomaenisI92
| | |--S. l. leucomaenisI92
| | |--S. l. imbrius Jordan & McGregor 1925I92
| | |--S. l. japonicus Oshima 1961I92
| | `--S. l. pluviusI92
| |--S. malmaB96
| | |--S. m. malmaI92
| | |--S. m. krascheninnikovi Taranetz 1933I92
| | `--S. m. miyabei Oshima 1938I92
| `--S. namaycushB96
`--+--OncorhynchusB96
| | i. s.: O. apacheS92
| | O. gilaeS92
| |--O. mykiss (Walbaum 1792)B96, SE08 [=Salmo mykissB96; incl. S. gairdneriKF02]
| `--+--O. masou (Brevoort 1856)B96, I92
| | |--O. m. masouI92
| | `--O. m. ishikawai Jordan & McGregor 1925I92
| `--+--O. kisutch (Walbaum 1792)B96, KF02
| `--+--O. tshawytschaB96
| `--+--O. ketaB96
| `--+--O. gorbuscha (Walbaum 1792)B96, KF02
| |--O. nerkaB96
| | |--O. n. nerkaI92
| | `--O. n. kawamurae Jordan & McGregor 1925I92
| `--O. salaxS92
`--Salmo Linnaeus 1758B96, L58
|--S. albula Linnaeus 1758L58
|--S. alpinus Linnaeus 1758L58
|--S. anostomus Linnaeus 1758L58
|--S. apacheUSDI77
|--S. bimaculatus Linnaeus 1758L58
|--S. carpio Linnaeus 1758L58
|--S. clarkiLG80 [=Oncorhynchus clarkiB96]
| |--S. c. clarkiLG80
| |--S. c. bouvieriLG80
| |--S. c. henshawiLG80
| |--S. c. lewisiLG80
| |--S. c. pleuriticusLG80
| |--S. c. selenirisUSDI77
| |--S. c. stomiasUSDI77
| `--S. c. utahLG80
|--S. eperlanus Linnaeus 1758L58
|--S. eriox Linnaeus 1758L58
|--S. gibbosus Linnaeus 1758L58
|--S. gilaeUSDI77
|--S. gloverii Girard 1854DS89
|--S. hucho Linnaeus 1758L58
|--S. immaculatus Linnaeus 1758L58
|--S. irideusGC79
|--S. lacustris Linnaeus 1758L58
|--S. lavaretus Linnaeus 1758L58
|--S. malmaMR76
|--S. niloticus Linnaeus 1758L58
|--S. oxyrinchus Linnaeus 1758L58
|--S. platycephalusUSDI77
|--S. pulverulentus Linnaeus 1758L58
|--S. salar Linnaeus 1758L58
|--S. salmarinus Linnaeus 1758L58
|--S. salvelinus Linnaeus 1758L58
|--S. saurus Linnaeus 1758L58
|--S. thymallus Linnaeus 1758L58
|--S. trutta Linnaeus 1758SE08
| |--S. t. truttaSE08
| `--S. t. fario Linnaeus 1758SE08
|--S. umbla Linnaeus 1758L58
`--S. vimba Linnaeus 1758L58
*Type species of generic name indicated
References
[B96] Bond, C. E. 1996. Biology of Fishes 2nd ed. Saunders College Publishing: Fort Worth.
[B50a] Brooks, J. L. 1950a. Speciation in ancient lakes. Quarterly Review of Biology 25: 30–60.
[B50b] Brooks, J. L. 1950b. Speciation in ancient lakes (concluded). Quarterly Review of Biology 25: 131–176.
[DS89] Dundee, H. A., & H. M. Smith. 1989. Nomenclatural eponym endings revisited. Systematic Zoology 38 (3): 279–283.
[F16] Fowler, H. W. 1916. Fishes from eastern Canada. Proceedings of the Academy of Natural Sciences of Philadelphia 67 (3): 515–519.
[GC79] Goodman, M., J. Czelusniak, G. W. Moore, A. E. Romero-Herrera & G. Matsuda. 1979. Fitting the gene lineage into its species lineage, a parsimony strategy illustrated by cladograms constructed from globin sequences. Systematic Zoology 28 (2): 132–163.
[I92] Iwahashi, J. (ed.) 1992. Reddo Deeta Animaruzu: a pictorial of Japanese fauna facing extinction. JICC: Tokyo.
[KF02] Kocik, J. F., & K. D. Friedland. 2002. Salmons and trouts. Family Salmonidae. In: Collette, B. B., & G. Klein-MacPhee (eds) Bigelow and Schroeder’s Fishes of the Gulf of Maine 3rd ed. pp. 170–181. Smithsonian Institute Press: Washington.
[L58] Linnaeus, C. 1758. Systema Naturae per Regna Tria Naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata. Laurentii Salvii: Holmiae.
[LG80] Loudenslager, E. J., & G. A. E. Gall. 1980. Geographic patterns of protein variation and subspeciation in cutthroat trout, Salmo clarki. Systematic Zoology 29 (1): 27–42.
[MR76] Moodie, G. E. E., & T. E. Reimchen. 1976. Phenetic variation and habitat differences in Gasterosteus populations of the Queen Charlotte Islands. Systematic Zoology 25 (1): 49–61.
[SE08] Sevcsik, A., & T. Erös. 2008. A revised catalogue of freshwater fishes of Hungary and the neighbouring countries in the Hungarian Natural History Museum (Pisces). Annales Historico-Naturales Musei Nationalis Hungarici 100: 331–383.
[S92] Smith, G. R. 1992. Introgression in fishes: significance for paleontology, cladistics, and evolutionary rates. Systematic Biology 41 (1): 41–57.
[USDI77] United States Department of the Interior. 1977. Endangered and threatened wildlife and plants—republication of list of species. Federal Register 42: 36420–36431.