Why famous koi ponds attract so many tourists
Ever wondered why ordinary ponds suddenly become international photo magnets? The reason's simple: a pond with colourful koi and a clear view of Mount Fuji, which rises 3,776 metres, is an irresistible composition for social media.
Guess what? Locations around Lake Kawaguchi and other Fuji Five Lakes areas have long been popular for postcard shots, and local garden ponds in Kanazawa and Kyoto also draw big crowds who expect a serene snapshot. The best part? The colours of the carp, the mirror-like water, and weather that gives you a near-perfect silhouette of Fuji, all in one frame. But that's not all.
What tourists are doing and why it worries locals
No joke: visitors have been throwing coins into koi ponds en masse, often thinking they're doing something cute or lucky. For example, a Japan Today report noted that thousands of coins have accumulated in some well-known ponds, and that volunteers and garden staff are regularly clearing them out. Here's the catch: these coins aren't an offering, and they damage the fish and the ecosystem.
How coins harm the pond environment
Trust me on this one: metal leaches into water over time. Small amounts may seem harmless, but hundreds or thousands of coins create a measurable change in water chemistry. Koi are sensitive to ammonia, nitrates, and heavy metals, which can lead to illness or fatalities. Personally, seeing a pond cleared of coins by staff is a sad sight; that clean water took real effort to restore. Personally...
Cultural context: saisen versus random coin-throwing
To be fair, Japan has a tradition of offering coins at shrines, known as saisen, thrown into a saisen-bako box while praying. For example, at a shrine, you may toss a 5 yen coin for luck and bow. That doesn't translate to fountains or ornamental ponds. The reason's simple: a saisen-bako is designed to receive money, and the act is part of a ritual called osaisen. Throwing coins into a pond misunderstands the custom and creates maintenance headaches for caretakers. Wait, there's more.
Numbers, currency facts and concrete impacts
Fun fact: the 500 yen coin is the highest-value Japanese coin in circulation. Its value, around three to four US dollars depending on rates, means a pile of coins can be surprisingly valuable. Maintenance teams at some parks have reported removing hundreds to thousands of yen in coins after busy weekends. The best part? Local managers sometimes donate the cleaned coins to charity, but the cleanup itself can cost time and disturb the fish.
Guess what else? A single pond can host dozens of species of aquatic plants and invertebrates that suffer when metal accumulates. Garden staff often test pH and other indicators, and if levels shift, they must perform partial water changes or use filtration boosters. But that's not all.
How photographers and visitors can be respectful
Ever wondered why some spots now have barriers and signs? The reason's simple: to protect delicate habitats and preserve the view for everyone. My tip? Step back, use a longer lens, or shoot during early morning light to avoid crowds.
Trust me on this one: learning a bit of Japanese etiquette goes a long way. Saying a polite "excuse me," or following signs about where to stand will get you better photos and smoother interactions with locals. Insider tip: ask permission before stepping into a garden area that looks like private property; many are managed by small shrines or communities. Highly recommended: carry a small notebook and write down any Japanese words you hear; it helps with learning vocabulary and cultural cues. Personally...
What caretakers are doing
Before I forget, some sites now have clear signs explaining the harm, and volunteers do regular cleanups. Others have installed shallow saisen boxes at viewing points so visitors have an outlet for ritual coins that doesn’t harm wildlife. The best part? This creates a teaching moment about omotenashi, Japan’s spirit of hospitality, where visitors learn to respect places that locals cherish. But that's not all.
For example, a few gardens now run brief etiquette panels in English, and local tourism boards sometimes post guidelines online. That helps clarify the difference between shrine offerings and pond-damaging coin tosses. Wait, there's more.
Frequently Asked Questions
Is tossing coins into a koi pond illegal?
Short answer: usually not criminal, but it is often prohibited by park rules and can lead to fines or removal for damaging property.
Why are coins harmful to fish?
Short answer: metal leaches and changes water chemistry, which stresses fish and aquatic life.
How can I take a great photo without harming the pond?
Short answer: use a telephoto lens, shoot from marked paths, and respect signage. Early morning photos often beat the crowds.



