A fish-hobbyist friend of mine says that in the close-up shots, you can see that the fish are breathing heavily, suggesting that the water is not being circulated enough. Also, fish often swim close to the surface to get more air. So they collect at the top of the tower, unable to figure out that...
A fish-hobbyist friend of mine says that in the close-up shots, you can see that the fish are breathing heavily, suggesting that the water is not being circulated enough. Also, fish often swim close to the surface to get more air. So they collect at the top of the tower, unable to figure out that...