Keeping koi is certainly a challenge. Aside from creating an ideal and stable aquatic environment to thrive in, keeping koi healthy and protected from predators are additional tasks that need to be undertaken seriously regularly.
Unfortunately, the koi’s bright colors can easily attract predators. Against the green pond background, koi are easy to spot and make them vulnerable to predators, including cats, raccoons, herons, and foxes.
Securing Pond From Predators
Here are proven ways to secure your koi pond from predators:
Make the water level deep enough so herons cannot stand in it. A pond should have a depth of more than 24 inches to discourage herons.
Overhangs should be built high enough so mammals cannot reach in and swipe at your fish.
Trees can be planted around the pond to provide shade and prevent flying birds from spotting the koi swimming in the pond.
You can install a scarecrow device, a motion-activated sprinkler system attached to a garden hose and runs on a battery. It has a built-in sensor that can detect the presence of a potential predator, turning on the hose full blast, thus giving the animal an unexpected cold shower.
Putting lots of plants around the pond’s edge can also protect koi from being snatched. Plants can deter raccoons from taking a swipe at the fish. Raccoons also have the habit of trashing the pond and disturbing the pond’s ecosystem. Having plants at the pond’s edge can certainly discourage this behaviour.
Tall plants and floating plant species such as water lilies provide excellent hiding places for your koi.
Placing plastic netting on top of the pond provides a cover that can effectively protect koi from all predators.
Putting in a plastic heron on the pond can discourage another heron and often cause the animal to look for food elsewhere.
Building tunnels or caves as part of the pond’s design provides a great place to hide not only from predators but also from the sun’s heat. You can also choose to buy koi caves or koi castles that are available commercially.
Leave an outdoor radio tuned in to a news station or talk show. Predators don’t usually want to get too close to places where they discern human activity.
Farms and wineries have used the motion-activated predator call broadcaster to keep animals from feasting on their crops. Smaller models are now available and can easily be installed close to your koi pond.
Installing in aerators or surface agitators not only promotes dissolved oxygen levels but is also another way to obscure the view of your pond. As potential predators survey the pond, a disturbed water surface can make it difficult for them to spot any koi.
A dog, such as the Great Pyrenees, has been known to be a great pond protector. The presence of your pet dog along the vicinity of the pond will certainly offer great predator deterrence.