Fishermen, Fog and Daylight saving

Last week I was on my way home from downtown when I noticed one of the fishermen got a fish so I decided to stop and see if they got another one. The photo is taken from a bikeway bridge crossing the "canal" coming from the hydro power plant. The power plant is maybe 300 meters to the right, upstream.

The fishermen are using scoop nets (long poles with a small net bag attached to the end). They put the pole on the water near the bridge, and the net is near the bottom of the river. Then they walk downstream and try to catch all fish swimming upstream into the net bag.  They're fishing common whitefish (Coregonus). The male fishes or females without roe the fisherman can keep, the female fishes with roe are taken by the government (fishing agency?)
Other fishes will be captured too. Some must be released (salmon, trout etc and some other fishes if they're too small).

He caught one! I'm not sure if this one was legal to eat  or one to that must be released. They took it out of the net and rushed it away. Obviously it was not one they could kill on the spot. What did they do with it? Either released back to the river or to a barrel where they keep the female whitefish with roe. They can't just throw it back to the water as it's too high. They must get to the stairs behind the trees in the pic above.

Looks like a big one. Blurry shot, but best shot I had :(

This week there has been two foggy days (or was one of them last week?) Cold air meets warmer air from the sea. Last two weeks have been cloudy and rainy, and the temperatures have been above average. Even at night it's been above freezing, but on the other hand it's been about +5C during the day, too.

These two foggy photos are resized, otherwise unedited so they're a bit darker than what the eye saw. They were taken at about 4pm. Sunset on that day was 15:50. Due to the daylight savings scheme, sunsets jumped one hour earlier when we adjusted the clocks last Sunday.

The first photo is taked towards the combined heat and power plant, but it's hidden in the fog. Even the railway bridge is hard to see, and that's just three hundred meters away.

Bikeway through the park.