Vertical Jigging and Inchiku: Complete Guide to Technique, Equipment and Target Species

Vertical Jigging and Inchiku Fishing: Complete Guide

Vertical Jigging and Inchiku fishing represent one of the most advanced frontiers of modern sport fishing at sea. These techniques, developed and perfected in Japan, have rapidly gained popularity in the Mediterranean thanks to their ability to trigger the aggression of large predators and the spectacular nature of the catches.

Their main strength lies in their innovative approach: instead of targeting fish with live or natural bait, they use special metallic lures, worked with vertical movements designed to perfectly imitate the behavior of a fleeing fish or a struggling cephalopod. The effect is highly realistic and irresistible to dentex, amberjack, grouper, bonito, and many other marine predators.

In this complete guide, you’ll find all the information you need to approach these techniques with awareness and success. We’ll cover in detail:

• what Vertical Jigging and Inchiku are and how they work,
• the main variations and differences between the two techniques,
• how to choose the right equipment based on depth, currents, and target species,
• the most effective rigs and lures,
• the types of fish you can target,
• the advantages and limitations of these methods,
• practical tips on weather, sea conditions, and winning strategies.

Whether you’re an experienced angler seeking new challenges or an enthusiast looking to explore this fascinating world, this guide will serve as a complete resource for practicing Vertical Jigging and Inchiku fishing with maximum effectiveness.

What Is Vertical Jigging

Vertical Jigging is a modern and highly specialized fishing technique practiced almost exclusively from a boat. Its distinctive feature is the use of a metal lure the jig which is dropped vertically to the seabed or the desired depth and then retrieved with alternating, rhythmic movements. These jerks, interrupted by pauses, very realistically imitate the behavior of a wounded fish or prey in flight, thereby triggering the predatory instinct of large marine carnivores.

Unlike other fishing techniques, success here isn’t left to chance: the angler becomes an active protagonist, giving the lure a “rhythm” that can make all the difference. Every variation in speed, movement amplitude, and pause can provoke a predator’s strike.

It’s a dynamic and thrilling technique that demands good physical endurance and concentration. Vertical Jigging isn’t simply “drop and retrieve” — it’s a continuous dance between angler and lure, allowing exploration of different depths and increasing the chances of encountering fish.

 

Main Features of Vertical Jigging

Vertical action: fishing takes place directly beneath the boat, with no need to cast. This allows you to fish in very deep waters or on precise spots located with a fishfinder.

Use of heavy jigs: metal lures range from 40 g to over 300 g depending on depth, current strength, and target species.

Rhythmic and personalized retrieve: effectiveness depends on the movement imparted to the jig. Alternating fast jerks with slower retrieves perfectly mimics distressed prey irresistible to amberjack, dentex, grouper, and other predators.

Versatility: by changing the jig’s weight, shape, and color, you can adapt the technique to a variety of fishing scenarios from shallow coastal bottoms to deeper offshore areas.

Vertical Jigging blends strength, technique, and finesse: the angler must read the sea, adapt to environmental conditions, and find the right rhythm to transform a simple lure into living prey in the eyes of predators.

What Is Inchiku

Inchiku is a refined variation of Vertical Jigging, 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 (which serves as both weight and visual stimulus) connected to a small silicone octopus skirt equipped with assist hooks. This combination merges the jig’s efficiency in quickly reaching the bottom with the soft, sinuous appeal of a cephalopod.

The silicone skirt, which moves freely behind the metal body, creates a natural and lifelike motion reminiscent of squid or octopus the favorite prey of dentex, grouper, and porgy. It can also be enhanced with specific attractants to amplify sensory stimulation, making the lure irresistible even to the most cautious fish.

 

Characteristics of Inchiku

Smooth and fluid movement: compared to a traditional jig, the Inchiku produces a softer and more natural action, ideal for deceiving wary predators.

Double attraction: the metal body draws attention with flashes and vibrations, while the silicone skirt convinces with its softness and realistic sway.

Effectiveness during pauses: many strikes occur when the silicone skirt “floats” passively after a pull, perfectly imitating a wounded cephalopod.

Adaptability: the skirt can be easily replaced, allowing you to choose colors and sizes based on light conditions, depth, or fish preferences.

Enhanced scent attraction: many anglers apply scents or attractants to the skirt to boost its effectiveness, especially on days with low predatory activity.

Inchiku proves particularly effective in challenging conditions, when classic Vertical Jigging might be too aggressive. Its subtle and natural presentation makes it one of the best weapons for targeting predators such as dentex, grouper, porgy, amberjack, and even large seabream especially in rocky areas, reefs, and drop-offs teeming with life.

Equipment for Vertical Jigging and Inchiku

To successfully practice Vertical Jigging and Inchiku, it’s essential to choose specialized and well-balanced equipment. Every component from the rod to the leader directly affects the technique’s effectiveness and your ability to handle powerful fish.

Rod

The rod is the core of the Vertical Jigging and Inchiku setup: it must be powerful, sensitive, and reliable, capable of transmitting movement accurately to the lure while managing the violent runs of predators without giving in under pressure.

Power and weight rating: jigging rods are classified according to the jig weight they can handle, generally ranging from 50 g to over 300 g. A rod rated for 100–200 g is the most versatile choice for beginners, as it allows fishing both at medium depths (40–80 m) and in deeper waters with moderate currents. Those fishing regularly in very deep areas or strong currents should opt for models rated 200–300 g, while anglers working lighter, coastal spots can choose 50–100 g rods.

Action: the ideal action is parabolic or progressive. This curve helps absorb strikes and headshakes from predators without sudden breakages, while also allowing for smooth, natural lure movement. A rod that’s too stiff transmits sharp, unnatural vibrations to the lure and quickly fatigues the angler during long sessions.

Length: typically between 1.70 and 2.10 meters. A shorter rod offers greater control and reduces fatigue, especially for vertical work, while a slightly longer rod can be useful on the boat to better manage fights and provide more leverage during hook sets.

Ergonomics and components: a non-slip grip, reinforced reel seat, and high-quality guides (preferably double-footed and braid-ready) make a big difference in both comfort and durability.

The perfect rod for Vertical Jigging and Inchiku is a balance of strength, lightness, and sensitivity: it should allow the angler to work the lure effortlessly while confidently handling the sudden power of an amberjack or dentex.

 

Reel

The reel is the second cornerstone of the Vertical Jigging and Inchiku setup. It must be a true “workhorse,” capable of withstanding long sessions, repeated retrieves, and, above all, the strength of large marine predators. Durability, smoothness, and retrieval power are the main qualities to consider.

Type: both conventional (overhead) and spinning reels can be used.

Conventional reels offer greater power, direct control over the line, and long-term durability ideal for experienced anglers. Compact models designed specifically for jigging are especially popular.

Spinning reels with a front drag system are more intuitive and easier to handle, making them perfect for those new to this technique. In recent years, technological advancements have brought spinning reels designed for jigging to excellent performance levels, significantly narrowing the gap with conventional reels.

Line capacity: to safely handle both deep waters and the sudden runs of powerful fish, the reel should hold at least 200–300 meters of braided line of appropriate diameter. A greater capacity is recommended for fishing beyond 100 meters or in areas with strong currents.

Gear ratio: it’s important to find the right balance between power and speed. A medium ratio between 4:1 and 6:1 allows for retrieving the jig at a proper rhythm without excessive fatigue, while still providing the strength needed to fight predators. Higher ratios (6:1 and above) offer faster retrieves but less torque; lower ratios deliver more power but require more time to reel in line.

Drag system: it must be precise and powerful, with a smooth adjustment that can handle sudden runs without jerks or slippage. A drag capacity of 8–12 kg (real) is a good benchmark for most jigging situations in the Mediterranean.

Materials and durability: stainless steel or bronze gears, aluminum or reinforced composite body, and saltwater-sealed bearings every construction detail affects the reel’s longevity and reliability at sea.

The ideal reel for Vertical Jigging and Inchiku must combine strength, smoothness, and power, becoming the angler’s inseparable partner during the often extreme battles with large marine predators.

Braided Line and Leader

The choice of line is one of the most important factors for success in Vertical Jigging and Inchiku. A high-quality braided line, paired with a strong and nearly invisible leader, allows you to transmit the lure’s movement effectively while withstanding the strain from powerful, hard-fighting predators.

Braided line (braid): multifilament line is the ideal solution thanks to its lack of elasticity, which provides maximum sensitivity. This allows you to clearly feel both the bottom contact and even the most delicate bites.

The most commonly used diameters range from PE 1.5 to PE 3.0 (20–40 lb), depending on depth, current strength, and the species targeted.

• For moderate depths and medium-sized predators (such as dentex and porgy), PE 1.5–2.0 is more than sufficient.
• For deeper waters, strong currents, or large fish (such as amberjack or grouper), it’s better to use PE 2.5–3.0, which offers greater strength without sacrificing too much sensitivity.

It’s always advisable to choose round, compact braids with 8 or 12 strands, as they reduce water resistance and allow for faster descent to the fishing zone.

Leader (fluorocarbon): this is the “invisible” part of the setup, directly in contact with the fish and the seabed.

Fluorocarbon is essential because it has a refractive index similar to that of water, making it almost invisible to fish, while also offering high abrasion resistance.

A diameter between 0.40 and 0.60 mm and a length of 1–2 meters is the standard choice thin enough not to alarm fish, yet strong enough to resist sharp teeth and friction against rocks or wrecks.

• For dentex and porgy, use 0.40–0.50 mm.
• For amberjack and grouper, it’s better to go up to 0.55–0.60 mm.

Knot connection: the junction between braid and leader must be tied using compact, reliable knots such as the FG Knot or Albright Special, which provide excellent strength without creating bulk that could hinder the jig’s descent.

The braid and leader must form a perfectly balanced pair: the braid provides sensitivity and control over the lure, while the leader ensures stealth and protection against abrasion and sharp predator teeth.

 

Lures

Lures are the beating heart of Vertical Jigging and Inchiku: their job is to deceive the predator by perfectly imitating a live prey. The right choice of weight, shape, and color can make the difference between an unproductive day and one full of successful catches.

Jigs

Metal jigs come in a wide range of weights, usually from 40 g to over 250 g, and must be selected based on:

• Fishing depth: the deeper the water, the heavier the jig should be to reach the bottom quickly without being carried away by the current.
• Current strength: in strong drift conditions, heavier and slimmer jigs are preferred, as they sink faster and maintain vertical position.
• Fish activity: lighter, compact jigs worked slowly are ideal when predators are inactive; conversely, heavier, slim jigs allow for fast, aggressive retrieves to trigger hunting fish.

Shapes and actions:

• Slim and elongated: designed for fast sinking and quick retrieves, they’re perfect for fast, pelagic predators such as amberjack, bonito, and little tunny.
• Compact and stubby: produce wide, oscillating movements that look very natural even at low speeds. Ideal for bottom-dwelling predators such as dentex, porgy, and grouper, which prefer calculated attacks.
• Colors: natural tones (blue, silver, green) work best in clear, well-lit waters; bright or fluorescent colors (pink, orange, yellow) are more visible at depth or in murky water.

 

Inchiku

Inchiku lures are hybrid artificials, generally weighing 60 to 200 g, made up of a metal body and a silicone octopus skirt rigged with assist hooks. Their strength lies in the dual attraction:

• the metal body attracts with flashes and vibrations,
• the soft, lifelike skirt convinces even the most cautious predators.

Main features:

• Versatility: the skirts are easily interchangeable and available in many colors and sizes, allowing adaptation to light conditions, water clarity, and fish preferences.
• Effectiveness during pauses: most strikes occur when the skirt sways passively during pauses, imitating a wounded or weakened cephalopod.
• Assist hooks: these must always be of excellent quality sharp and strong to ensure secure hooksets even with large fish.

Inchiku lures are particularly effective for bottom-dwelling species such as dentex, grouper, and porgy, but they can also surprise pelagic fish like amberjack and mahi-mahi when these predators are inactive or wary.

Recommended Rigs

The rig is a crucial element for success in Vertical Jigging and Inchiku. A good setup ensures that the lure moves naturally, transmits vibrations correctly, and increases the chances of a successful strike.

Assist Hooks

Assist hooks are additional hooks mounted on Kevlar or reinforced fluorocarbon cords, attached directly to the jig or silicone skirt. Their function is twofold: to increase the chances of hooking and to reduce the risk of losing strong, hard-fighting predators.

• Length and strength: the cords should be long enough not to interfere with the lure’s movement but strong enough to withstand headshakes and sudden pulls.
• Hooks: always choose high-quality assist hooks sharp, corrosion-resistant, and capable of maintaining a solid hookset even with large fish.

Lure Connection

The way the lure is connected to the leader directly affects its movement and appeal:

• Use high-quality split rings or solid rings to ensure smooth lure action and strong resistance during strikes.
• Avoid oversized or heavy swivels: they can disrupt the natural wobbling of the jig or silicone skirt, making the action unnatural and reducing success rates.
• In Inchiku setups, it’s best to secure the assist hooks and silicone skirt with tight knots and, if possible, a small drop of glue to prevent accidental detachment.

 

Practical Tips

• Always check the line’s path: the line must run smoothly without friction against guides or knots.
• For deep jigging, use clean, streamlined rigs minimizing components that could hinder vertical descent or rhythmic retrieval.
• Experimenting with different cord and hook lengths can make a big difference: a slightly longer cord enhances skirt movement, while a shorter one gives a more aggressive and direct presentation.

 

A well-crafted and balanced rig can turn even a simple lure into a truly irresistible bait, greatly increasing your chances of success in Vertical Jigging and Inchiku fishing.

Retrieval Techniques

Retrieval is the beating heart of Vertical Jigging and Inchiku fishing: it’s not enough to simply drop the lure to the bottom it’s the way you move it that triggers the fish’s predatory instinct. By varying rhythm, amplitude, and pauses, you can adapt to different conditions and dramatically increase your chances of success.

Speed Jigging

Characteristics: involves a fast and aggressive retrieve, alternating energetic jerks that give the lure sudden and erratic movements.
When to use it: ideal for fast, aggressive predators such as amberjack, little tunny, bonito, and mahi-mahi, which react to quick, visible stimuli.
Technique: drop the jig rapidly to the bottom or the desired depth, then retrieve it with sharp 30–50 cm jerks, interspersed with short 1–2 second pauses to simulate the behavior of fleeing prey.

Slow Jigging

Characteristics: the retrieve is slow and wide, with gentle jerks and longer pauses that highlight the lure’s natural movement.
When to use it: perfect for cautious, bottom-dwelling predators such as dentex, porgy, grouper, and seabream, which prefer more “natural” and less aggressive prey.
Technique: let the jig touch the bottom, then retrieve it with soft 10–20 cm lifts followed by a few seconds’ pause. This slow rhythm stimulates the interest of less active fish without scaring them away.

Classic Inchiku

Characteristics: makes the most of the soft, lifelike motion of the silicone skirt and the natural wobble of the metal body, emphasizing the effectiveness of pauses.
When to use it: especially effective with wary predators or during low-activity conditions, such as calm seas or cold water.
Technique: let the Inchiku reach the bottom, then retrieve it slowly with small rod-tip lifts, alternating with 2–5 second pauses. During pauses, the silicone skirt “floats” and sways, imitating a wounded cephalopod often triggering a strike even without further movement.

Practical Tips

• Alternating Speed and Slow Jigging during the same fishing session can be highly effective sometimes an inactive fish will react to a different movement after observing it for a few minutes.
• Always adapt the rhythm and amplitude of retrieval to the depth, current, and target species.
• Using a fishfinder helps identify the depth of the fish and fine-tune your retrieval technique with greater precision.

Mastering the control of speed and movement amplitude is the key to turning any jig or Inchiku into an irresistible prey imitation, allowing you to adapt to predator behavior and sea conditions with maximum effectiveness.

Target Species

Vertical Jigging and Inchiku allow anglers to target a wide variety of Mediterranean marine predators, both pelagic and bottom-dwelling. Knowing each species’ behavior, preferred depths, and the most effective retrieval technique can make the difference between a successful and a disappointing day of fishing.

Dentex (Dentex dentex)

Habitat: rocky bottoms, reefs, and wrecks between 30 and 100 meters.
Characteristics: a resident predator but highly reactive to natural stimuli.
Recommended technique: Slow Jigging or Classic Inchiku with wide movements and regular pauses. Compact jigs or Inchikus with natural-colored silicone skirts work best.

Amberjack (Seriola dumerili)

Habitat: drop-offs and rocky reefs, often between 50 and 150 meters.
Characteristics: a fast, aggressive predator strongly attracted to quick movements.
Recommended technique: Speed Jigging with slim, elongated jigs, using energetic retrieves and firm jerks.

Grouper (Epinephelus spp.)

Habitat: rocky areas, reefs, and wrecks, generally between 30 and 80 meters.
Characteristics: a cautious, territorial predator that often observes the lure before striking.
Recommended technique: Slow Jigging or Inchiku, with gentle retrieves and long pauses. Soft lures and natural colors increase effectiveness.

Red Porgy (Pagrus pagrus)

Habitat: mixed sand-rock bottoms, reefs, and seagrass beds between 20 and 80 meters.
Characteristics: a curious fish that tends to strike slowly moving lures.
Recommended technique: compact jigs or small Inchikus, slow retrieves with pauses; light or natural-colored skirts are preferred.

Bonito and Little Tunny (Sarda sarda, Euthynnus alletteratus)

Habitat: open waters, often between 20 and 100 meters, hunting schools of smaller fish.
Characteristics: fast predators, reactive to quick and visible stimuli.
Recommended technique: Speed Jigging with elongated jigs and fast retrieves; bright or reflective colors increase strikes.

Mahi-Mahi (Coryphaena hippurus)

Habitat: coastal and offshore pelagic zones, generally between 10 and 50 meters.
Best season: autumn, when they move toward warmer coastal waters.
Recommended technique: light jigs or small Inchikus, fast retrieves alternating short jerks and brief pauses.

Bluefish (Pomatomus saltatrix)

Habitat: mid-depth waters, often near wrecks or rocky areas.
Characteristics: aggressive predators, less wary than other species.
Recommended technique: both Speed and Slow Jigging work well — adjust the jig’s weight and shape based on depth and current strength.

Understanding each predator’s behavior, habitat, and preferred presentation allows you to fine-tune your approach and maximize success in Vertical Jigging and Inchiku fishing.

 

Advantages and Disadvantages of Vertical Jigging and Inchiku

Understanding the pros and cons of these techniques is essential to determine whether they suit your fishing style and the conditions in which you operate.

Advantages

Highly effective on predators: both Vertical Jigging and Inchiku strongly stimulate the predatory instinct, even in the wariest fish, making it possible to target prized species such as amberjack, dentex, grouper, and bonito. The realistic action of the lure combined with well-timed jerks and calculated pauses attracts even the most cautious predators.

Exciting and dynamic technique: the vertical motion of the lure and the powerful strikes from big fish turn every catch into an intense, adrenaline-filled experience. Each retrieve is a challenge that requires focus, reflexes, and skill in controlling the lure’s movement.

Versatility across depths: these techniques can be used from just a few meters down to over 150 meters, adapting to coastal bottoms, reefs, and deep offshore zones. This flexibility allows anglers to target both resident and pelagic predators, greatly increasing the odds of success.

Reusable and durable lures: jigs and Inchikus are built to last. With proper maintenance, they can be used multiple times, reducing costs compared to live or natural bait while ensuring consistently high performance.

Total control over the lure: the angler can adjust speed, amplitude, and pauses, adapting the technique to sea conditions, fish behavior, and depth. This level of customization makes the fishing process strategic, allowing for greater effectiveness even in challenging conditions.

Disadvantages

High physical effort: Vertical Jigging and Inchiku demand continuous movement of the lure, with constant jerks and retrieves. This results in significant strain on the arms and shoulders, especially during long sessions or when fighting large fish. Physical endurance is therefore crucial for success.

Need for specialized equipment: to practice these techniques effectively, it’s essential to have a boat, fishfinder, GPS, and navigation tools. Without proper technological support, locating the right bottoms and predators becomes difficult, drastically reducing catch potential.

High initial investment: quality rods, reels, braided lines, leaders, and lures represent a considerable upfront cost. However, this investment is offset by the long lifespan of artificial lures, their reusability, and the satisfaction of landing remarkable and memorable catches.

Learning curve: mastering the technique requires time and practice. Being able to modulate rhythm, jerk amplitude, and pauses is fundamental beginners may initially struggle to find the right combination of movements for each species and situation. Patience and experience are therefore key to achieving consistent results.

Dependence on environmental conditions: wind, currents, and sea state can significantly influence the lure’s action. Extreme conditions make it more difficult to maintain control and may require adjustments in technique or gear.

With awareness of these pros and cons, anglers can better prepare for the challenges of Vertical Jigging and Inchiku techniques that reward skill, endurance, and precision with some of the most thrilling catches in saltwater fishing.

Weather and Environmental Conditions

The success of Vertical Jigging and Inchiku largely depends on sea conditions and the surrounding environment. Knowing how to read and interpret them can make the difference between a productive and an unproductive day.

Current

• A moderate current is ideal: it allows the jig or Inchiku to descend correctly and move naturally.
• If the current is too strong, heavier jigs are needed, which increases fatigue and physical strain during retrieves.
• With a weak current, you can use lighter jigs and slower retrieves, making fishing less tiring and more precise.

 

Weather and Sea State

• Calm or slightly wavy seas are ideal for Vertical Jigging, as they help maintain the lure’s vertical position and improve bite detection.
• In rough seas or strong winds, controlling the lure’s descent and retrieve becomes difficult, increasing the risk of tangles and reducing the technique’s effectiveness.

Depth

Depth directly influences both jig selection and retrieval strategy.

• Depths between 40 and 120 meters are very productive for dentex, grouper, and porgy.
• For amberjack, which are more pelagic predators, you can fish even beyond 150 meters, especially near drop-offs and steep slopes.
• It’s useful to consult bathymetric maps and use a fishfinder to locate the most promising spots.

Bottom Structure

• Resident predators often concentrate in specific areas such as reefs, ledges, wrecks, and drop-offs. These locations offer shelter and abundant prey, increasing the likelihood of strikes.
• Avoid featureless areas where predatory fish are more dispersed and less likely to attack.

Time of Day

• The most productive moments are dawn and dusk, when light is low and predators become active hunters.
• Night fishing can also be rewarding in certain seasons and for specific species but requires greater experience and proper equipment for safety and visibility.

Practical Tip

Always monitor weather forecasts, currents, and tides before heading out. Even small variations can affect optimal depth, jig choice, and fish behavior.
Experimenting with different depths and retrieval rhythms based on environmental conditions can greatly increase your chances of success.

Practical Tips for Success

To achieve consistent results with Vertical Jigging and Inchiku, having good equipment is not enough practical strategy and attentiveness to sea conditions and predator behavior are essential.

• Rely on your fishfinder: it’s an essential tool for locating fish schools, wrecks, and submerged structures such as reefs and ledges. It allows you to drop your lure at the correct depth, minimizing downtime and maximizing catch potential.
• Carry a variety of lures: always bring jigs and Inchikus of different weights, shapes, and colors. Adapting to real-time conditions depth, current, light, and fish activity is often the key to triggering strikes.
• Don’t rush: many bites occur during pauses, especially with Inchiku or Slow Jigging. Letting the lure swing freely near the bottom or midwater can entice even the most cautious predators and greatly improve hook-up rates.
• Maintain your gear: regularly check hooks, assist hooks, leaders, and knots. Saltwater, abrasion, and the strain from powerful predators can quickly wear down components, compromising both safety and success.
• Prioritize safety at sea: always wear a life jacket, maintain onboard radio communication, and stay aware of weather conditions. Even calm waters can turn dangerous due to sudden winds, strong currents, or rising waves.
• Observe and adapt: every spot and every day is different. Watching fish behavior, experimenting with retrieve speeds and jig types, and keeping notes on results will help refine your technique and make you a more effective, mindful angler.

 

Why Choose Vertical Jigging and Inchiku

Vertical Jigging and Inchiku are two of the most exciting and rewarding techniques for targeting the great predators of the sea. Although they require energy, physical endurance, specialized equipment, and an understanding of environmental conditions, the satisfaction they provide is unmatched  every strike and every fight becomes an intense and memorable experience.

With proper preparation, careful selection of jigs and Inchikus, and the ability to read depth, current, and fish behavior, even an ordinary day at sea can turn into a true sport fishing adventure.

These techniques are not just methods for catching fish they are a way of experiencing the sea itself, refining one’s skills, experimenting with strategies, and fully embracing the thrilling challenge between angler and predator.