Bass Fishing in Japan: A Visiting Angler's Practical Guide
Last updated: July 2026 · By Bass-Dash
Japan is one of the few places on earth where you can fish water that produced a world-record largemouth, in a country with world-class trains, food and hospitality — and almost no language barrier once you're on a boat. But there is one rule that surprises nearly every visiting angler, and getting it wrong at Lake Biwa is a legal problem, not just an etiquette one. Here's what you actually need to know before you go.
Under Shiga Prefecture's ordinance on the proper use of Lake Biwa for leisure (滋賀県琵琶湖のレジャー利用の適正化に関する条例), releasing largemouth bass, smallmouth bass, or bluegill back into the water is prohibited throughout Shiga Prefecture. Bass are legally designated invasive species in Japan. Anglers are asked to place caught fish into the invasive-fish collection boxes or holding pens (外来魚回収ボックス / 回収いけす) placed along the shoreline and at fishing ports; if none is nearby, dispatch the fish and take it away for proper disposal. The collected fish are composted. Confirm current rules with Shiga Prefecture or your boat shop before you fish.
1. Do you need a fishing license?
For bass at Lake Biwa: no license is required. Lake Biwa is legally treated as a "sea district," so private fishing rights are not established there and anglers can fish without buying a permit. This is not universal in Japan — many rivers and some lakes are managed by fishing cooperatives that sell a daily ticket (遊漁券, yugyoken), typically bought at nearby tackle shops or convenience stores. If you fish anywhere other than Biwa, ask the local shop first.
2. Lake Biwa in one paragraph
Biwa is Japan's largest freshwater lake — roughly 258,000 acres, up to about 340 feet deep, in Shiga Prefecture just east of Kyoto. Florida-strain largemouth were introduced in the 1970s, and in 2009 Manabu Kurita landed a 22 lb 5 oz fish here that tied George Perry's 77-year-old world record. It remains the proving ground for Japanese tackle: if a rod, reel or soft bait survives Biwa's pressure, it works anywhere.
3. When to go
| Season | What's happening | Go-to presentations |
|---|---|---|
| Spring (Mar–May) | Pre-spawn giants move from 10–15 ft onto shallow hard bottom. Best big-fish window. | Large glide baits, jerkbaits |
| Summer (Jun–Aug) | Fish hold on deep weed edges, 10–20 ft. Numbers over size. | Wacky rig, drop shot, swim jigs |
| Fall (Sep–Nov) | Shad-followers push shallow again. Reaction bite improves. | Chatterbaits, medium cranks |
| Winter (Dec–Feb) | Deep, slow, north-basin structure. Low numbers, big average. | Deep drop shot, heavy jigs |
If your trip is flexible and you want one shot at a giant, April–May is the window. If you want to bend the rod all day and learn Japanese finesse technique, come in summer.
4. Getting there and getting on the water
Biwa is unusually easy to reach for a world-class fishery. It sits about 10–15 minutes by train from Kyoto Station to the Otsu area on the south end of the lake, and roughly an hour from Osaka. Kyoto makes a comfortable base — you can fish a full day and still have dinner in the city.
Rental boats are widely available around the south basin (Nango), with launches in the Moriyama, Otsu and Kusatsu areas. Most visiting anglers do one of two things:
- Book an English-speaking guide. The simplest option. Boat, tackle, local knowledge and the regulations are all handled for you. Worth it for a first trip.
- Rent a boat. Cheaper, but confirm in advance what operator licensing the shop requires and whether they will rent to visitors — this varies by shop, so email before you fly.
5. Where to fish on Biwa
- South Basin / Nango — eel grass beds, hard-bottom points and docks. The main tournament zone, and the most pressured water on the lake.
- Jietai-oki (Self-Defense Force offshore) — a mid-lake weed flat in 5–15 ft, notorious for giant Florida-strain fish in spring.
- North Basin — deep, clear, far less pressure. Big swimbaits on main-lake structure in fall and winter.
- Hikone / Ogi (east shore) — reed-lined shallows; prime frog and punching water from June through August.
6. What to bring
You do not need to bring a lure collection. Japan is where most of them are made, and shopping the local tackle stores is genuinely part of the trip — you will find sizes, colors and entire categories that never reach US shelves. What's worth packing:
- Your own rods and reels if you're particular, though guides supply tackle. Note that Japanese rods run shorter on average than US equivalents.
- Line — spool up before you go so you're not converting gou (号) sizing on day one.
- Polarized glasses and rain gear. Biwa gets windy and the sight-fishing is real.
- Cash. Small boat shops and rural tackle stores may not take foreign cards.
7. Etiquette that matters
- Follow the no-release rule without argument. To Japanese anglers this is a settled point of law and conservation, not a debate. Nothing will sour a day faster than pushing back on it.
- Take your trash, including line. Access to shoreline spots has been lost over the years because of litter.
- Be quiet and give space. Boats and bank anglers work closer together than in the US; crowding someone's water is noticed.
- A little Japanese goes a long way. "Sumimasen" (excuse me) and "arigatou gozaimasu" (thank you) cover most situations.
Regulations change. The no-release ordinance and license information above reflect Shiga Prefecture guidance as published at the time of writing; always confirm current rules with Shiga Prefecture or your boat shop before fishing. This page is general information, not legal advice. Bass-Dash may earn a commission from links on this site — see our disclosure.