They will get sad or stressed. They need plants.
That depends on how big the tank is. Small tanks that are easy to carry can have most of the water removed and then be picked up and relocated. Larger tanks will need to have the fish, water, plants, rocks etc removed and then be re landscaped after it has been relocated.
Fish.
The water plants have cells. Plants live. Rocks are not alive.
Other fish and underwater plants.
Many fish eat plants in the water; due to there being a variety of plants and fish, and some of them being herbivores, their diets can vary and plant matter and/or algae is a part of their diet.
algae, decaying plants in the water
No, fish dechlorinator is specifically designed to remove chlorine and chloramine from water for fish, not for plants. It may not effectively remove other harmful chemicals that could be harmful to plants. It is recommended to use a plant-specific water treatment product for removing harmful chemicals from water for plants.
yes they can if they are adapted to it
The answer to this riddle is a "fish on a plate." Once removed from the water and cooked, fish can be delicious and enjoyed as a meal.
The solution will gain water from the fish, till the fish shrinks, and if the fish is not removed from the solution, the fish will die
Some fish eat water plants. Manatees, or sea cows, also eat water plants. Humans also eat some sea plants.
Fish Plants & Water