Lars og Lars

Nilssen gets into a big fight with his fishing buddy Peter in the first episode of this season. Sea trout fishing in the Oslofjord has been poor in recent years. This year's spring fishing may indicate that the population is on the rise.

Alna is Oslo's longest and most polluted river. Previously, the river was devoid of fish downstream of Grorud. Over the past ten years, trout have spread down the waterway and are now found all the way down to Gamlebyen.

Lars and Arin continue their trout adventure in the streams near the city center. From Alna they have moved over to Hovinbekken.

Lars comes across a phenomenon few, if any, have seen before in this country: American rainbow trout in spawning mode in a waterway where they have established a reproductive population. The species is blacklisted by the authorities and unwanted in Norwegian nature.

Lars and Lars come across a formidable mayfly hatch during a splashing rainstorm in Nordmarka. The trout are watching like crazy, but they are not easy to fool.

Intense 24-hour fly hatches and intense wakes are a fly fisherman's dream setting, but sometimes there can be too much of a good thing. Lars and Lars have no chance against the wakeful trout that are constantly on the hunt.

There is a record increase in spawning fish from Lake Mjøsa. As of 31.08, 1309 trout had passed the fish ladder at Hunderfossen power plant. The proportion of fry was 25 percent, a figure that is getting lower every year. The natural recruitment of trout sole in Lågen is now so great that the State Administrator has removed the order for releases. Lars N was present when the last trout sole were released.

Most Norwegian river power plants have such coarse grids in front of the water intake that migrating fish end up in the turbines. Lars N. is involved in an experiment that simulates what happens in front of a hydroelectric intake and why fish choose the turbine path.