Fishing Spot Japan

Fishing rules in Okayama

What Okayama adds on top of national law, and what we still do not hold for it. Rules stack downwards: the prefecture may restrict more than the nation, and a cooperative more than the prefecture. None may permit what a layer above forbids.

Legal gear

These are the gear a non-professional may use in Okayama’s sea areas. The list is exhaustive: anything not shown here may not be used at all, which catches out visitors who assume a speargun or diving apparatus is merely restricted rather than banned.

Okayama 21

×Trolling×Scoop net●▲Hand line & rod fishing△Landing net△Cast net○Fishing spear (excluding harpoons)○Rake / clam tool○Hand gathering30
○ Permitted● Permitted, but lights / fish-attracting lamps are prohibited△ Permitted, but not from a vessel※ Permitted, but chumming is prohibited▲ Permitted, but chumming from a vessel is prohibited× Prohibited

Footnotes that apply in Okayama

These are the prefecture’s own qualifications on the marks above, quoted from the source table in Japanese.

  1. 21
  2. 30
Source: https://www.jfa.maff.go.jp/j/yugyo/y_kisei/kisoku/todo_huken/index.htmlAs of 2026-03-31✓ checked 2026-08-25

If you are not a Japanese national

Under the Act on the Regulation of Fishing Operations by Foreign Nationals (Act No. 60 of 1967), recreational fishing by foreign nationals in Japanese waters is limited to 'gathering or catching of aquatic animals or plants on a minor scale'. What you may use depends on the size of the boat you are on.

Method / gearShore (no vessel)Vessel under 3 GTVessel 3 GT or more
Rod fishing, handlineyesyesguide-only
Landing net, scoop net, fishing spear, clam rake or knifeyesyesguide-only
Cast netyesnono
Trollingn/ayesguide-only

On a vessel of 3 gross tons or more, a foreign national may fish ONLY when the trip is run by a Japanese vessel under the control of a Japanese fisher — that is, a registered charter (yugyosen) or fishing boat. Most serious offshore boats are over 3 GT, so for offshore fishing a licensed Japanese guide is not a convenience. It is the law.

Up to 3 years' imprisonment, a fine of up to ¥30,000,000, or both — for breaching the gear and method rules that apply specifically to foreign nationals.

This is national law and applies in Okayama exactly as everywhere else. It sits on top of the prefecture’s gear list above — you need to clear both.

Size limits and closed seasons

Okayama VERIFIED

Set by the Okayama Sea-area Fisheries Adjustment Rules (art. 42 for gear).

Applies to: Sea. This table comes from the prefecture's sea-fishing guidance. Rivers and lakes are governed separately — check the local cooperative.

Closed seasons

Red seabream1 Jul – 30 SepApplies to fish of 12 cm total length or under.
Ayu (sweetfish)1 Jan – 31 May
Young-of-the-year mullet, sea bass and redlip mullet1 Mar – 30 Jun
Young-of-the-year gizzard shad1 Jul – 31 Jul
Swimming crab under 15 cm carapace widthAll yearWidened from April 2024 — it used to be 13 cm, 1 Aug – 30 Sep only.
Common octopus — off Kojima and Shimotsui1 Sep – 30 Sep
Sea cucumberAll yearAlso nationally protected.
AbaloneAll yearAlso nationally protected.
Pen shell1 Jun – 31 Oct
Geoduck (mirugai)21 Apr – 30 Nov
Wakame seaweed1 Oct – 15 Feb
EelgrassAll year
SargassumAll year
All aquatic animals — Takahashi River, 500 m below the tidal weir1 Mar – 31 May
Ayu — same stretch1 Oct – 31 Oct

May not be taken at or under this size

Swimming crab (gazami)under 15 cm carapace width — prohibited all year since April 2024
Common octopus150 g or under (by weight)
Red seabream12 cm total length or under, 1 Jul – 30 Sep
Kuruma prawn5 cm total length or under
Conger eel15 cm total length or under
Japanese eel20 cm total length or under
Rockfish (mebaru / kasago)7 cm body length or under
Hard clam3 cm shell length or under

Prohibited methods

  • Sea — Anything not on the permitted list (Rules art. 42)
  • Sea — Chumming from a boat
  • Sea — Night fishing using light (Rules art. 37)
  • Sea — Spears fitted with a launching mechanism (Rules art. 37)
  • Kurashiki, Tamashima Bansho-bana to the Takahashi River weir — Landing net used with light (Rules art. 40)

Permitted: hand gathering on foot; cast net and landing net, neither from a boat; handline and rod; a trap of under 15 cm mouth diameter and 90 cm length; gaff; spear without a launching mechanism. Nothing else may be used in Okayama waters. Some public wharves are closed to entry for security reasons — the restriction covers the water as well as the quay, so approaching by boat is also barred.

Okayama and Kagawa jointly publish a sea handbook, distributed through tackle shops, marinas and charter operators.

Source: Okayama Prefecture — for recreational anglers (sea edition), plus the prefecture's own size and closed-season charts (PDF). The charts are illustrated; figures were read from the rendered page, not from text extraction. https://www.pref.okayama.jp/page/detail-2855.html✓ checked 2026-08-28

Cooperatives that sell a permit online

2 in Okayama. Buying before you travel matters: on many rivers the price doubles if you buy it on the bank.

Kamogo Fishery Cooperative

Buy permit →

Niimi

Lure OK
Buy permit →

Places we list here

We do not yet list a fishing spot in Okayama. Everything above still applies to anywhere you fish in the prefecture.

What we do not hold, and who to ask

Being explicit about the gap is the point of this page. What is missing:

  • Sea-area and inland committee directives, which close specific waters or periods. We hold these for a few prefectures only.
  • Port and municipal rules. Posted on signs at the water, in Japanese, and published nowhere centrally.

Okayama Inland Fisheries Federation
086-225-2562

National rules apply on top of everything here — see Before you fish. How every figure is graded is set out in Data & sources.