I am unable to downvote but I would if I could. Many reservoirs are for municipal water supplies and not for marine life. It is common to cover them to reduce evaporation. To jump to the conclusion that floating solar arrays would "fuck the fishes" is obviously not well thought out.
In the United States, very few reservoirs are exclusively for water supplies. Most large-scale reservoirs I've been to (probably 50 or 60 from Lake Mead[1] to Woodcliff Lake[2]) are also used for recreational boating, fishing, and wildlife habitat.
Wikipedia[1], and probably most dictionaries, disagrees:
> A reservoir (from French réservoir – a "tank") is, most commonly, an enlarged natural or artificial lake, pond or impoundment created using a dam or lock to store water.
I've been to plenty of reservoirs with "lake" in the name, and I didn't realize the closest lake to my childhood home was a reservoir until I was a teenager, and the name didn't have reservoir in the name.
