1. Simulate wild environment: If you want to raise octopus with fresh water, you need to add some sea salt or seawater essence to fresh water first, so that you can simulate seawater. Secondly, some sand and gravel should be added to the bottom of the water, which can restore the marine environment more. Finally, some ceramic pots can be added to give octopus a hiding place.

2. Oxygen pump: Octopus needs more oxygen. When cultured in fresh water, it is necessary to install an oxygen pump and continuously pump oxygen, so as to ensure sufficient oxygen in their water. If the water in which octopuses are farmed lacks oxygen, they may spit ink all the time.

3. Prepare food: Octopus live in seawater, so the food they eat is also marine life. When feeding, you can prepare some shrimp, shells, crabs and other foods, preferably live, and their desire to eat will be higher.

Octopus can be kept at home. They are not too aggressive. Although they usually jet ink, they can generally grow normally as long as they are not frightened or attacked. However, most octopuses are farmed in fish tanks, and the suction cups of octopus can suck on the walls of fish tanks, and then climb out slowly. Therefore, it is necessary to prepare a deeper container when breeding. If conditions permit, a lid can be added.