The Lainio is the most important tributary of the Torne system — more than half the Torne's salmon run up it to spawn — and it inherits the same cross-border, annually-set rules: verify the current year's salmon dates and quota before you travel. Sweden's right to roam does not grant fishing rights; you need a permit (fiskekort) for the local water plus at least one gill tag before fishing salmon, and female salmon may not be kept and must be released. Salmon fishing closes 1 September–31 December. Most of the river is local FVOF permit water bought through iFiske or the beat manager, but one notable stretch is private: Camp Onka holds a lodge beat of private double-bank water (up to about 8 rods per week, on beats described as Lipistokoski, Onka and Phatakoski), booked as a package and not available as a public day-ticket.