First, in Tlingit they’re called, in order: tʼá /tʼá/, g̱aat
/qaːt/, lʼook /ɬʼuːk/ (cognate with Proto-Athabaskan *ɬuːqʼə
‘fish’, e.g. Denaʼina ɬiqʼa, Tsuutʼina ɬúkʼá, Navajo ɬóːʔ),
téelʼ /tʰíːɬʼ/, and cháasʼ /tʃʰáːsʼ/. The generic term for
‘fish’ which by default refers to any kind of salmon is x̱áat
/χáːt/. The scientific names all come from Russian, and were
originally given by Johann Julius Walbaum during his time in the
Russian Far East. The name O. tshawytscha is from Russian
чавы́ча /tɕaˈvɨtɕa/ which is itself from Itelʼmen čevičev. O.
nerka is in Russian не́рка /ˈnʲerka/, but in Siberian dialects
ня́рка /ˈnʲarka/, and which appears to be from Proto-Samoyedic
*nʸʌrkə, compare Nganasan nʸorə. O. kisutch is Russian ки́жуч
/ˈkʲiʐutɕ/ but in Siberian dialects ки́зуч /ˈkʲizutɕ/, coming
from Itelʼmen kizuez; the dialectal form is the source of the
scientific name. O. keta is particularly interesting: in Russian
it is ке́та /ˈkʲeta/ but this is again not native; rather, the
source is probably Evenki keːta ‘O.