For trout living in still waters, weed is a significant part of their habitat.
Just as the clean water and sub-straight – the silt, soils, or whatever makes up the base layer, contribute to the whole environment, weed growth has a lot to do with the exchange of oxygen, and provides cover for macro invertebrates, crustacea, Galaxia, and the foods that they live on.
The trout is an apex predator in its environment, so with a really good structure of microscopic and macroscopic members of the food chain living in the weed, and using the weed as a primary shelter and food source, the trout is guaranteed quality of life.
Video credit: Fiona Dewar