People who have fishes for pets agree on the difficulty of moving these types of pets from one place to another. Considering how inevitable moving is, there are those who give up their fishes are they do not want to go through one of the most difficult things to deal with when moving.
One of the hardest challenge when moving your pet fish would be the aquarium. If you have smaller fishes, then you have one less worry as you can put them in jars and dismantlement the aquarium. If you are not so sure about dismantling your own aquarium, you can refer to the old manual or if not, simply take a picture of how they look like that way you can refer to it when putting it back again.