Amass of air always becomes saturated when it reaches the specific humidity point. lowest temperature of the day. highest temperature of the day. dew-point temperature.

The air mass always becomes saturated once it reaches its dewpoint temperature. This temperature comes to a point when the air can no longer hold the water vapor present in it, and some vapor tend to condense and becomes liquid water. This temperature point is always lower than the air temperature.

I’d have to say no because without oxygen in the water the fish would all be dead. so if you want to fish for dead fish, pick the ponds with the lowest oxygen concentrations.