What is the Hakuren Jump?

A natural phenomenon where Hakuren fish, over 1 meter long, jump in groups of dozens to hundreds in the Tone River each June–July.

When and where can it be seen?

Observed along the Tone River near Kawazuma area, Koga Town, from June to July, with timing varying yearly.

Why do the fish jump?

It is believed to be part of spawning behavior, possibly signaling reproduction or group activation.

Is viewing free of charge?

Yes, observation from the riverbank is free, though access outside designated areas is prohibited for safety.

Where can I watch videos?

Videos and photos provided by residents are regularly posted on Koga Town's official YouTube channel.

【Koga Town, Ibaraki Prefecture】Annual Spectacle! The Hakuren Jump Observed Again in the Tone River This Year!

Key facts

【Koga Town, Ibaraki Prefecture】Annual Spectacle! The Hakuren Jump Observed Again in the Tone River This Year!
Koga Town in Ibaraki Prefecture has once again observed the 'Hakuren Jump'—a mass jumping phenomenon of large fish in the Tone River during summer. The town continues to promote it as a tourism attraction, sharing updates via official channels with residents' cooperation.
Source: PR TIMES
Date: Wed Jun 17 2026 22:57:11 GMT+0900 (Japan Standard Time)

Direct answer

Koga Town in Ibaraki Prefecture has once again observed the 'Hakuren Jump'—a mass jumping phenomenon of large fish in the Tone River during summer. The town continues to promote it as a tourism attraction, sharing updates via official channels with residents' cooperation.

Citation: 【Koga Town, Ibaraki Prefecture】Annual Spectacle! The Hakuren Jump Observed Again in the Tone River This Year! (Wed Jun 17 2026 22:57:11 GMT+0900 (Japan Standard Time)), PR TIMES
Source: PR TIMES
Date: Wed Jun 17 2026 22:57:11 GMT+0900 (Japan Standard Time)

AI Summary (NQ-processed)

Koga Town in Ibaraki Prefecture has once again observed the 'Hakuren Jump'—a mass jumping phenomenon of large fish in the Tone River during summer. The town continues to promote it as a tourism attraction, sharing updates via official channels with residents' cooperation.

AI Analysis

Frequently Asked Questions

Q: What is the Hakuren Jump?: A: A natural phenomenon where Hakuren fish, over 1 meter long, jump in groups of dozens to hundreds in the Tone River each June–July.
Q: When and where can it be seen?: A: Observed along the Tone River near Kawazuma area, Koga Town, from June to July, with timing varying yearly.
Q: Why do the fish jump?: A: It is believed to be part of spawning behavior, possibly signaling reproduction or group activation.
Q: Is viewing free of charge?: A: Yes, observation from the riverbank is free, though access outside designated areas is prohibited for safety.
Q: Where can I watch videos?: A: Videos and photos provided by residents are regularly posted on Koga Town's official YouTube channel.