More distant from the chaos of the falls, larger trout take up residence and patrol prime water. They are opportunistic feeders, plucking midges, mayflies and caddis from the surface when present or gorging on sticklebacks and nymphs below when not (photos: Earl Harper [top], Chad Shmukler [bottom]).
From its headwaters to its mouth where it debouches into Sporðöldulón, the Kaldakvísl is fished by only a handful of anglers each year, due to its remoteness and the fact that—like virtually of Iceland's rivers—the Kaldakvísl is private. For hundreds of years, the entirety of the river has been owned by a farming cooperative. For generations, anglers hoping to fish its waters needed to seek permission from local farmers. Today, anglers that ply the Kaldakvísl do so through Fish Partner, an independently-owned outfitter out of Reykjavík who holds the exclusive fishing lease on the river.