There are a few things you can do to help keep your koi and other pond fish healthy and happy in your pond.

1 – First, make sure that you provide plenty of cover and hiding places for your fish. This will help them feel safe and secure, which is important for their overall well-being.

2 – You should also try to create a natural environment in your pond by adding plants and rocks. This will give your fish somewhere to hide and feed, and it will also make the pond more attractive.

3 – Another thing to keep in mind is that your fish need clean water to stay healthy. Make sure to regularly test the water quality and pH level, and take corrective action if necessary.

4 – Be sure to feed your fish a healthy diet. Koi and other pond fish will thrive on a diet of both live and dried food.

5 – If you’re concerned about waste buildup in your pond, try putting plants and biological filters into the water. Of course, you should always keep a close eye on your fish to make sure that they aren’t suffering as a result.

6 – Another thing to be aware of is that big fish eat little fish. Koi and other species will often prey upon smaller, slower species such as goldfish or koi if given the opportunity. You’ll need to take special care with these species to ensure their safety.

7 – Make sure not to overcrowd your pond. The more fish you have in one place, the less room each individual has for themselves. This means stressed-out sick individuals can contaminate others, leading to a greater overall problem.

8 – Always use a pond net when removing fish from your pond. This will help prevent unnecessary stress and injury.

9 – If you’re unable to properly care for your fish, it’s best to let them go and find a new home. This will ensure that they aren’t exposed to unnecessary stress or harm, and it will also reduce the load on your care.

10 – Finally, make sure you’re aware of water temperature changes. Most species can tolerate variations of up to 20 degrees Fahrenheit (F). Any hotter than this, however, and you need to take steps to cool down the pond.