Mention three quality of water that is suitable for use in a fish pond

Here are three qualities of water that are suitable for use in a fish pond:

1. Good dissolved oxygen levels: Fish need adequate dissolved oxygen to breathe and survive.
2. Appropriate pH level: The water's pH should be within a suitable range for the specific fish species, typically between 6.5 and 8.5.
3. Absence of toxic substances: The water must be free from pollutants, heavy metals, pesticides, and other harmful chemicals that can harm or kill fish.