if it is a cosmetic pond put your fish in an aquarium and drain your pump so it doesn't freeze and break drain your pond
They suffocate...
You de-freeze it.
Yes
The top freezes. Under the frozen top is liquid water.
Lake freezes first at the surface is convection involved
It explodes and the apocalypse happens.... What do you think happens? it freezes
It freezes.
water freezes from the outside to the inside. when a lake freezes, the top turns to ice first.
how is a lake and river that freezes over helpful to the organisms in the water
If the water freezes but the pond is deep enough for the fish to still be in water at the bottom there is a good chance they will survive. If all of the water freezes however and the fish become frozen solid then I'm afraid they are unlikely to survive.
You must drain the lake and find the fish before they drown.
it's freezes
It has to do with their blood. The same happens with humans. When fish blood freezes it crystallizes, like water. When this happens the crystals can damage the tissue of the fishes vital organs. Making it impossible to revive them after they have been cryo-preserved.
As the water freezes, it will expand.