Dropper-rig bottom fishing from a Boat / Charter
Bigeye Tuna: After confirming bottom, lift slightly to avoid snags. Follow the skipper on sinker size and drop timing.
Waters: Southern Pacific coast, Okinawa & Nansei Islands, Deep sea
Fish
Bigeye Tuna メバチ
Thunnus obesus ・ Scombridae (Mackerels, Tunas, and Bonitos)
Catch season
- Catchable
- Peak
Months for Bigeye Tuna are a broad Japan-wide guide and shift with region, temperature and conditions; prefer local reports and rules.
About
Its Japanese name, mebachi, refers to its large eyes. It makes up about 30 percent of the tuna sold in Japan and is a standard choice for sashimi (raw fish) and sushi, with vivid red flesh.
Basics
- Scientific name
- Thunnus obesus
- Family
- Scombridae (Mackerels, Tunas, and Bonitos)
- Japanese name
- メバチ
- Kana
- めばち
- Waters
- Southern Pacific coast, Okinawa & Nansei Islands, Deep sea
- Size
- 44 cm (max 80 cm)
- Time of day
- Dawn, Daytime
- Depth (tana)
- Within a few metres of the deep seabed, following the skipper's depth call.
How to catch it
Kit for this fish
Dropper-rig starter kit ・ Kit total ¥14,000–36,000
- 1.8 m dropper-rig rodShort rod for pier or boat dropper rigs; match sinker rating to local or boat instructions. ¥3,500–14,000AdFind on AmazonFind on Rakuten
- Spinning reel, size 2500The most versatile size for pier fishing: one reel covers sabiki, float fishing and eging. ¥4,000–15,000AdFind on AmazonFind on Rakuten
- PE braid, 1.0-gouFor wind fishing for cutlassfish and small jacks. The quarry has teeth, so always finish with wire or a heavy leader. ¥1,500–5,000AdFind on AmazonFind on Rakuten
- Two- or three-hook dropper rigReady-made bottom rig; choose hook size for the target and bait. ¥300–1,200AdFind on AmazonFind on Rakuten
- Cut fish bait (saury, mackerel, sardine)For hole fishing, cutlassfish and larger rockfish. Salting the flesh firms it so it stays on the hook. ¥300–900AdFind on AmazonFind on Rakuten
- Fishing pliers / hook removerEssential protection from venomous spines and sharp teeth. Most injuries happen when someone unhooks a fish bare-handed. ¥800–4,000AdFind on AmazonFind on Rakuten
- Cool box, 15-20 LFor carrying fish home cold. Take plenty of ice; in summer a poorly insulated box is not fit for the job. ¥4,000–25,000AdFind on AmazonFind on Rakuten
- Life jacket, adult (Japan Craft Inspection approved)The first thing to buy, and worn on piers, rocks and boats alike. Boat fishing requires the government-approved type marked with the cherry-blossom stamp. ¥5,000–20,000AdFind on AmazonFind on Rakuten
Where the boat operator specifies sinker and rig sizes, follow those instructions.
Product links may be affiliate links. Prices move, so treat the ranges as a guide.
Handle with care
This fish is dangerous to handle bare-handed.
Histamine
Warm storage raises histamine-poisoning risk. Chill the catch immediately with ample ice; cooking is not a remedy.
Killing and carrying your catch — the taste is decided at the pier, not the kitchen
Eating
If retained for food, chill immediately and follow established local handling with thorough cooking.
Best eating: January–March, November, December
Rules
Before fishing, check prefectural fishery rules, regional size and season limits, protected areas, and harbour or charter retention 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.