Tsurizukan

Fish

Largemouth Bass オオクチバス

Micropterus nigricans ・ Centrarchidae (Freshwater Sunfishes)

Largemouth Bass (Micropterus nigricans)
Photo: Totti / CC BY-SA 4.0 — source

Catch season

Months for Largemouth Bass are a broad Japan-wide guide and shift with region, temperature and conditions; prefer local reports and rules.

About

A large North American predator that reaches about 60 cm. The back is greenish brown and a thick, ragged dark band runs down the middle of the flank. The mouth is the giveaway against the smallmouth bass: its corner extends past the rear edge of the eye. First released into Lake Ashi in 1925, it preys on native fish and is now a designated invasive species in Japan.

Basics

Scientific name
Micropterus nigricans
Family
Centrarchidae (Freshwater Sunfishes)
Japanese name
オオクチバス
Kana
おおくちばす
Waters
Rivers & lakes
Size
33 cm (max 60 cm)
Time of day
Dawn, Dusk, Night
Depth (tana)
Around bank cover and through mid-water, changing depth with season and temperature.

How to catch it

One of Japan's signature lure targets, worked with soft plastics and hard baits in farm ponds and reservoirs. It is designated an Invasive Alien Species, so moving it alive or releasing it into other waters is prohibited by law.

Freshwater lure fishing from a Lake / Pond / Reservoir

Largemouth Bass: Retrieve parallel to banks and inflows, changing depth and speed if there is no response. Follow local invasive-fish handling rules.

Waters: Rivers & lakes

Kit for this fish

Freshwater lure starter kit ・ Kit total ¥17,000–50,000

First check the permit, lure and hook rules, and handling requirements for invasive fish.

Product links may be affiliate links. Prices move, so treat the ranges as a guide.

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Eating

Eating quality 2/5 ★★☆☆☆

Food use varies locally. Check harvest rules and water quality, avoid raw consumption and cook thoroughly.

Rules

Largemouth Bass is regulated as a designated invasive alien species. Keeping, live transport and release are generally restricted. Local no-release rules and disposal methods vary, so also confirm permits, closed seasons, size and harvest rules.

Closed seasons and size limits — how to find the numbers, which differ by prefecture

This article organises general information and is not legal advice. Rules differ by municipality and by fishery cooperative, and they change. Always check the current rules for where you are going.

Other fish taken the same way

Other fish from the same kind of place

Seasons, sizes and eating quality are general guides. Rules change, so check the latest prefectural, fishery-cooperative and site rules before fishing. This app provides general information, not legal advice.