See nomenclatural details in Eschmeyer (CofF ver. Sep. 2011: Ref. 88002). The name hisutch corrected in kisutch in emendada p.720 but with a typo ('a' for 'u').
Etymology of Generic name :
Latin, salmo, Plinius = salmon (Ref. 45335).
Etymology of specific name :
Most probably a typo in the emendada p720 for kisutch, which is the vernacular name of this fish in Kamtchatka (Ref. 1998).