Why is there a fish in the water?

I took a photo yesterday of art installation in the middle of Stockholm. It’s a giant fish coming out of the water.

There have been other art installations in the same place before, so I wondered what this one was representing. I checked the internet, but all I could find at first was a question someone asked on Reddit. They had also taken a photo and asked, “Why is there a big fish in the water?”

Here are some of the answers this person received: 

• Because water has fish. I don’t understand the question.
• Camouflaged Russian submarine
• Symbolizes that there’s something fishy going on around there.
• His name is Olof. Give him a beer. He has great stories.

(Found out later it’s some sort of climate statement about fish, but I liked the above answers so much better.)