A crowd of 500 gathered at Þingvellir National Park last weekend to watch the brown trout’s annual spawning ritual, mbl.is reports. Every October and into early November, the lower end of Öxará river fills up with giant brown trout who swim up from the depths of the lake to spawn.
By far the largest of all Icelandic fish species, the brown trout endemic to Þingvallavatn lake can grow to 110cm (43in), though most do not grow over one metre. Biologist Jóhannes Sturlaugsson, who has studied the species for over two decades, was on site to educate visitors on the trout.
