Vertical Jigging and Inchiku Fishing: Complete Guide
Vertical Jigging and Inchiku fishing are among the most exciting techniques for targeting powerful saltwater predators. This guide explains how they work, which equipment to choose, how to move the lure, and when each method gives its best results.
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Vertical Jigging and Inchiku fishing represent one of the most advanced frontiers of modern sport fishing at sea. Developed and perfected in Japan, these techniques have become extremely popular among Mediterranean anglers because they can trigger the aggression of large predators and create spectacular fights.
Their main strength lies in a different approach to saltwater fishing: instead of relying on live or natural bait, the angler uses special artificial lures worked vertically under the boat. These lures are designed to imitate a fleeing baitfish, a wounded prey, or a struggling cephalopod. When the movement is correct, the effect can be irresistible to dentex, amberjack, grouper, bonito, red porgy, and many other marine predators.
In this complete guide, you will learn what Vertical Jigging and Inchiku are, how they differ, which equipment you need, how to choose the right lures, how to retrieve them, and which conditions are most productive.
Vertical Jigging or Inchiku: which one should you choose?
If predators are active, aggressive, and feeding in open water or near drop-offs, Vertical Jigging is usually the most direct and powerful choice. It allows fast, energetic movements that stimulate reaction strikes from amberjack, bonito, little tunny, mahi-mahi, and other fast predators.
If fish are cautious, close to the bottom, or not actively chasing, Inchiku often becomes more effective. Its silicone skirt moves naturally during pauses, imitating squid or octopus and convincing wary species such as dentex, grouper, red porgy, and seabream.
Practical verdict: carry both jigs and Inchikus. Start with a faster jig if fish are active; switch to Inchiku or slow jigging when marks are visible on the fishfinder but strikes are rare.
What Is Vertical Jigging?
Vertical Jigging is a highly specialized boat fishing technique based on the use of a metal lure called a jig. The jig is dropped vertically toward the seabed or to a specific depth and then retrieved with alternating jerks, lifts, pauses, and changes of speed.
These movements imitate a wounded baitfish or a prey trying to escape. The goal is not only to attract fish visually, but also to trigger their predatory instinct through flashes, vibration, sudden acceleration, and irregular pauses.
Unlike passive methods, Vertical Jigging requires constant participation from the angler. The lure becomes effective only when the rod, reel, line angle, and retrieval rhythm work together.
Main Features
- Vertical action: the lure works directly under or near the boat.
- Heavy metal jigs: weights usually range from 40 g to over 300 g.
- Rhythmic retrieve: speed, pauses, and jerk amplitude change the lure’s behavior.
- Versatility: the same method can be adapted to coastal bottoms, reefs, wrecks, and deep offshore spots.
Vertical Jigging blends strength, technique, and sensitivity. The angler must read the sea, understand the bottom, adapt to current and depth, and find the right movement to make a piece of metal look like living prey.
What Is Inchiku?
Inchiku is a refined variation of vertical lure fishing, developed in Japan and designed to attract predators even when they are cautious or inactive. Unlike a traditional jig, the Inchiku uses a hybrid lure: an elongated metal body connected to a small silicone octopus skirt equipped with assist hooks.
The metal body allows the lure to descend quickly, while the skirt creates a soft, sinuous, natural movement. This combination imitates squid, octopus, or a weakened cephalopod, which are important prey for many bottom-dwelling predators.
Softer Action
Compared to aggressive jigging, Inchiku produces a smoother movement that can deceive wary fish without scaring them.
Double Attraction
The metal body attracts with flash and vibration, while the silicone skirt convinces with lifelike movement.
Powerful During Pauses
Many strikes happen when the lure stops and the skirt floats naturally near the bottom.
Inchiku is particularly effective on dentex, grouper, red porgy, amberjack, and large seabream, especially around rocky areas, reefs, wrecks, ledges, and drop-offs rich in marine life.
Equipment for Vertical Jigging and Inchiku
To practice these techniques successfully, the equipment must be balanced. Every component matters: rod power, reel drag, braid diameter, leader resistance, knots, hooks, and lure weight all affect performance.
Rod
The rod is the core of the setup. It must be powerful enough to handle heavy lures and strong predators, but sensitive enough to transmit every movement and bite.
- Power and weight rating: jigging rods are usually classified according to the jig weight they can handle. A 100–200 g rod is a versatile starting point for many situations. Lighter rods are suitable for coastal areas, while 200–300 g rods are better for deeper water and stronger current.
- Action: a parabolic or progressive action helps absorb strikes and headshakes while keeping lure movement smooth and natural.
- Length: most rods range from 1.70 to 2.10 meters. Shorter rods reduce fatigue during vertical work, while slightly longer rods can help during the fight.
- Components: non-slip grips, reinforced reel seats, and braid-ready guides improve comfort, durability, and control.
Reel
The reel must be strong, smooth, and reliable. Long retrieves, repeated drops, and sudden runs from large predators put constant pressure on gears, drag, and frame.
- Type: both conventional and spinning reels can be used. Conventional reels offer direct control and power; spinning reels are intuitive and practical, especially for anglers approaching the technique for the first time.
- Line capacity: at least 200–300 meters of braided line is recommended, especially when fishing deep water or strong current.
- Gear ratio: a medium ratio between 4:1 and 6:1 offers a good balance between retrieval speed and torque.
- Drag: a smooth, precise drag is essential. A real drag capacity of 8–12 kg is a practical benchmark for many Mediterranean jigging situations.
- Materials: saltwater-resistant gears, sealed bearings, and a rigid body improve reliability and long-term performance.
Braided Line and Leader
A high-quality braided line paired with a strong fluorocarbon leader gives sensitivity, control, and abrasion resistance. This combination is essential when fishing near rocks, wrecks, and reefs.
- Braided line: PE 1.5 to PE 3.0, roughly 20–40 lb, covers many common situations. Use lighter braid for moderate depths and medium predators; choose stronger braid for deep water, current, amberjack, and grouper.
- Leader: fluorocarbon between 0.40 and 0.60 mm is a common choice. Use 0.40–0.50 mm for dentex and porgy; move toward 0.55–0.60 mm for amberjack, grouper, rocks, and wrecks.
- Connection knot: compact knots such as the FG Knot or Albright Special help maintain strength without creating excessive bulk through the guides.
Balanced setup rule: the braid gives sensitivity and direct contact; the leader gives stealth and protection. Both must be matched to depth, current, lure weight, and target species.
Lures and Recommended Rigs
Lures are the heart of Vertical Jigging and Inchiku. The correct weight, shape, color, and hook setup can make the difference between a slow day and a memorable catch.
| Element | Best Choice | When to Use It | Practical Note |
|---|---|---|---|
| Slim Jigs | Elongated metal profile | Deep water, current, fast predators | Ideal for amberjack, bonito, little tunny, and aggressive retrieves. |
| Compact Jigs | Short, wider profile | Bottom predators and slower action | Useful for dentex, red porgy, and grouper when fish are less active. |
| Inchiku | Metal body with silicone skirt | Wary predators, pauses, rocky bottoms | The skirt movement is often what triggers the strike. |
| Assist Hooks | Sharp, strong, corrosion-resistant hooks | Always | Check hook points frequently after contact with rocks or fish. |
Jigs
Metal jigs usually range from 40 g to over 250 g. Select the weight according to fishing depth, current strength, and the activity level of the fish.
- Fishing depth: the deeper the water, the heavier the jig must be to reach the target zone efficiently.
- Current strength: in strong drift conditions, heavier and slimmer jigs help maintain a better vertical angle.
- Fish activity: active predators often respond to fast, flashy movements; cautious fish may prefer slower, more compact presentations.
- Colors: natural tones such as blue, silver, and green work well in clear water; pink, orange, yellow, and glow colors are useful in deeper or darker conditions.
Inchiku Lures
Inchiku lures generally weigh from 60 to 200 g and combine a metal body with a silicone octopus skirt. The body attracts attention, while the skirt creates the convincing final detail.
- Versatility: skirts can be replaced to adapt to water clarity, depth, and fish preference.
- Pauses: the most important moment often occurs when the lure stops and the skirt moves freely.
- Assist hooks: they must be strong, sharp, and correctly positioned to avoid missed strikes.
Recommended Rig Details
The rig must allow the lure to move naturally while remaining strong enough to handle sudden strikes and heavy fights.
- Assist hooks: mount them on Kevlar or reinforced cord. The length should not block the lure’s movement, but it must position the hook where fish usually strike.
- Rings: use high-quality solid rings and split rings to maintain lure action and strength.
- Swivels: avoid oversized components that can disturb the jig’s balance or make the presentation unnatural.
- Inchiku skirts: check knots, cords, and skirts regularly. A damaged skirt can reduce the lure’s attraction dramatically.
Retrieval Techniques
Retrieval is the beating heart of Vertical Jigging and Inchiku fishing. It is not enough to drop the lure: the strike depends on how you move it, stop it, accelerate it, and let it fall.
Speed Jigging
Characteristics: fast, aggressive, and energetic. The jig moves with sudden acceleration and erratic flashes.
When to use it: active predators such as amberjack, bonito, little tunny, and mahi-mahi.
Technique: drop the jig to the target depth, then retrieve with sharp 30–50 cm jerks and short pauses of 1–2 seconds.
Slow Jigging
Characteristics: slow, controlled, and wider. The lure works with fluttering movements and longer pauses.
When to use it: cautious bottom predators such as dentex, grouper, red porgy, and seabream.
Technique: touch bottom, lift softly 10–20 cm, pause, and let the lure fall naturally.
Classic Inchiku
Characteristics: gentle rod-tip lifts, slow retrieve, and long pauses that allow the skirt to move freely.
When to use it: low-activity days, cold water, calm sea, or wary predators near the bottom.
Technique: let the Inchiku reach bottom, lift slowly, pause for 2–5 seconds, then repeat.
Practical tip: alternate retrieval styles during the same session. A predator that ignores a fast jig may attack a slow Inchiku, and a fish that follows without striking may react to a sudden change of rhythm.
Target Species
Vertical Jigging and Inchiku allow anglers to target a wide variety of Mediterranean predators. Knowing each species’ behavior, preferred habitat, and most effective presentation helps refine the strategy.
Dentex (Dentex dentex)
Habitat: rocky bottoms, reefs, and wrecks between 30 and 100 meters.
Recommended technique: Slow Jigging or Classic Inchiku with wide movements and controlled pauses. Compact jigs and natural-colored skirts are excellent choices.
Amberjack (Seriola dumerili)
Habitat: drop-offs and rocky reefs, often between 50 and 150 meters.
Recommended technique: Speed Jigging with slim elongated jigs, energetic retrieves, and firm jerks.
Grouper (Epinephelus spp.)
Habitat: rocky areas, reefs, and wrecks, generally between 30 and 80 meters.
Recommended technique: Slow Jigging or Inchiku with gentle retrieves and longer pauses. Natural colors and strong leaders are important.
Red Porgy (Pagrus pagrus)
Habitat: mixed sand-rock bottoms, reefs, and seagrass beds between 20 and 80 meters.
Recommended technique: small Inchikus, compact jigs, slow retrieves, and light or natural-colored skirts.
Bonito and Little Tunny
Habitat: open waters, often between 20 and 100 meters, while hunting schools of smaller fish.
Recommended technique: Speed Jigging with elongated jigs, fast retrieves, and reflective or bright colors.
Mahi-Mahi (Coryphaena hippurus)
Habitat: coastal and offshore pelagic zones, generally between 10 and 50 meters.
Recommended technique: light jigs or small Inchikus, fast retrieves, short jerks, and brief pauses.
Bluefish (Pomatomus saltatrix)
Habitat: mid-depth waters, rocky areas, and zones with baitfish activity.
Recommended technique: both Speed and Slow Jigging can work. Adjust lure weight and action according to depth and current.
Large Seabream
Habitat: rocky and mixed bottoms, often close to natural food sources.
Recommended technique: small Inchikus and slow presentations are usually more convincing than aggressive jigging.
Advantages and Disadvantages
Advantages
- Highly effective on predators: the lure action stimulates instinctive attacks.
- Exciting technique: every strike is direct, powerful, and intense.
- Versatile across depths: useful from coastal grounds to deep offshore areas.
- Reusable lures: jigs and Inchikus can last a long time with proper maintenance.
- Total lure control: the angler can adapt speed, depth, pauses, and action at any moment.
Disadvantages
- Physical effort: repeated jerks and retrieves can be demanding during long sessions.
- Specialized equipment: rod, reel, braid, leader, fishfinder, and boat setup matter.
- Initial investment: quality gear has a higher entry cost.
- Learning curve: rhythm, depth control, and lure choice require practice.
- Dependence on conditions: wind, current, and sea state strongly affect lure control.
Weather and Environmental Conditions
The success of Vertical Jigging and Inchiku depends heavily on sea conditions. Current, wind, depth, bottom structure, and time of day all influence lure choice and presentation.
Current
A moderate current is ideal because it helps the lure move naturally. If current is too strong, heavier jigs are needed; if it is weak, lighter lures and slower retrieves can be very effective.
Sea State
Calm or slightly wavy seas help maintain lure control and improve bite detection. Strong wind and rough sea make it harder to keep a proper vertical angle.
Depth
Depth affects jig weight and retrieval strategy. Many bottom predators are targeted between 40 and 120 meters, while amberjack can also be found deeper near drop-offs.
Bottom Structure
Reefs, ledges, wrecks, and drop-offs concentrate prey and predators. Featureless areas are usually less productive.
Time of Day
Dawn and dusk are often productive because predators become more active in lower light conditions.
Fishfinder Use
A fishfinder helps locate baitfish, predators, structure, and the exact depth where the lure should work.
Practical Tips for Success
- Rely on your fishfinder: locate fish schools, wrecks, reefs, ledges, and depth changes before dropping the lure.
- Carry a variety of lures: bring different weights, shapes, profiles, and colors to adapt to depth, current, light, and fish activity.
- Do not rush the pause: many bites happen when the lure stops, falls, or swings naturally.
- Check your gear often: saltwater, rocks, teeth, and heavy fights can damage hooks, leaders, knots, and assist cords.
- Stay safe at sea: wear a life jacket, monitor weather changes, maintain communication, and avoid risky conditions.
- Observe and adapt: every fishing spot is different. Change rhythm, lure weight, color, and depth until you find the pattern.
FAQ About Vertical Jigging and Inchiku
Is Vertical Jigging suitable for beginners?
Yes, but it requires practice. Beginners should start with moderate depths, balanced gear, and a simple slow retrieve before moving to deeper water and heavier jigs.
Is Inchiku easier than traditional jigging?
Often yes. Inchiku can be less physically demanding because it works well with slower movements and longer pauses, especially near the bottom.
What lure weight should I start with?
A practical starting range is 80–150 g for many medium-depth situations. Increase weight when fishing deeper water or stronger current.
Which colors work best?
Natural colors are excellent in clear water and bright light. Pink, orange, yellow, and glow details are useful in deeper water, cloudy days, or low visibility.
Why do fish strike during pauses?
A pause makes the lure look vulnerable. With Inchiku, the skirt continues to move softly even when the retrieve stops, often triggering cautious predators.
How often should I check the leader?
Check it after every strike, snag, or contact with rocks. Abrasion can weaken fluorocarbon quickly when fishing close to structure.
Why Choose Vertical Jigging and Inchiku?
Vertical Jigging and Inchiku are two of the most exciting and rewarding methods for targeting the great predators of the sea. They require energy, preparation, specialized equipment, and a good understanding of conditions, but the reward is a direct and memorable connection with powerful fish.
With the right rod, reel, braid, leader, lures, and retrieval technique, even an ordinary day at sea can become a true sport fishing adventure. These techniques are not only ways to catch fish; they are a way to read the sea, refine your skill, and experience the challenge between angler and predator at its highest level.
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