釣りの明るさの色の選び方: 海水、淡水、商業漁業に関する体系的なガイド

When it comes to choosing fishing light colors, the first question many anglers ask is, “Which color is the best?” — but this question can be misleading. In reality, the effectiveness of a fishing light doesn’t depend on a single “best color.” It’s a system decision: the light color must match water conditions, target species, fishing method, and installation setup.

This guide introduces a clear four-step decision framework to help you select the most suitable LED fishing light colors and setups for saltwater, freshwater, and commercial fishing scenarios. By understanding the relationship between water, light, and fish behavior, you can attract your target species more consistently and efficiently, reducing trial-and-error and improving your night fishing success.

How Water Conditions Affect Fishing Light Color Performance

Light Behavior in Water

The performance of fishing light colors depends heavily on how light travels through water. Unlike in air, light underwater is quickly affected by absorption and scattering. Different wavelengths fade at different rates, which means some colors remain visible much farther than others.

Shorter wavelengths such as blue and green generally travel farther underwater, while longer wavelengths diminish more rapidly. This difference is a key reason why fishing light color selection should never be random.

Water Clarity and Visibility

Water clarity plays a major role in determining which light color performs best. In clear water, light can travel farther before scattering, allowing certain colors to illuminate a wider area. In contrast, murky or plankton-rich water absorbs light more quickly and reduces visibility.

Green light is often favored because it maintains a balance between penetration and contrast, remaining visible in both clear and moderately turbid conditions.

Water Depth and Ambient Light at Night

Depth further influences how fishing light colors perform. As water depth increases, certain colors are absorbed faster than others. A color that works well in shallow freshwater may lose effectiveness in deeper saltwater environments.

At night, ambient light levels drop significantly. Even moderate-output fishing lights can create strong contrast against the surrounding darkness, making color choice more critical than sheer brightness.

Why There Is No Universal “Best” Fishing Light Color

Because water clarity, depth, and ambient light conditions vary so widely, no single fishing light color performs best in every situation. Effective color selection always depends on matching the light to the specific fishing environment.

This is why fishing light color choices are typically discussed by scenario rather than as a one-size-fits-all solution.

Best Fishing Light Colors for Saltwater Fishing

Saltwater environments present unique challenges due to their depth and varying water clarity. The best fishing light color for saltwater fishing depends on several factors, including the depth of the water, the clarity of the water, and the type of fish you are targeting. In these conditions, some light colors, such as green, blue, and cyan, offer advantages over others.

Saltwater environments present unique challenges due to depth, water clarity, and variable conditions. Choosing the most effective fishing light color depends not only on the target species but also on water characteristics and fishing depth. In these environments, green, blue, cyan, red, and even white light can offer advantages in attracting fish and bait.

Light Color Overview

Green Light: The Most Widely Used Choice

Green fishing lights are widely used in saltwater fishing because they balance penetration and visibility. Green light penetrates water effectively, remains visible at moderate depths, and strongly attracts plankton, which in turn draws baitfish and larger predators.

Blue Light: Effective in Clear and Deep Waters

Blue light penetrates deeper than other colors, making it ideal for offshore or deepwater fishing. It is most effective in clear water but less so in murky conditions.

Cyan Light: Balanced Penetration and Contrast

Cyan (blue-green) light combines the penetration of blue with the visibility of green, performing well in deeper or plankton-rich waters. It creates good contrast for fish to see and respond to the light.

Red Light: Stealthy Attraction

Red light is less visible to most fish, making it useful in pressured areas or shallow waters where fish are sensitive to light. However, it is less effective at attracting plankton.

White Light: Broad Illumination

White light provides broad, uniform illumination and can be useful for navigation or general visibility. It is generally less effective than green, blue, or cyan for attracting plankton and predatory fish.

Below is an example image showing how different light colors (white, green, blue, red) behave in a saltwater environment, with a boat and floating plankton. This visual demonstrates penetration, color visibility, and attraction zones for baitfish and target species.

Quick Comparison: Saltwater Fishing Light Colors

Best Fishing Light Colors for Freshwater Fishing

What Works Best in Typical Freshwater Conditions

In most freshwater environments—such as lakes, reservoirs, and slow-moving rivers—the goal is not extreme penetration, but stable fish aggregation.

Compared with offshore fishing, freshwater fish respond better to moderate, evenly distributed light rather than very intense or sharply focused beams.

In practice, green and cyan light are widely used in freshwater fishing because they create a visible attraction zone without overstimulating fish.

Blue light can be effective in clearer lakes, while red light is usually limited to very shallow or short-range applications due to its fast attenuation in water.

To make color selection easier, the table below summarizes how different light colors perform in typical freshwater environments.

Freshwater Fishing Light Color Comparison

Practical Tips for Using Fishing Lights in Lakes & Rivers

For freshwater fishing, light placement and output control often matter more than color alone.

Mounting the light above water and directing it downward allows the beam to spread naturally, helping baitfish and predators gather gradually.

Using fewer lights with consistent output usually delivers better results than installing multiple high-power lamps.

In most small- to mid-sized freshwater boats, one to two properly positioned fishing lights are sufficient for night operations.

ハイパワーコブフィッシュライティング

モデル番号.: 丸型
入力電圧: AC100-320V
サージ: 10000V
ワット/PC: 800W/1000W/1200W
LEDタイプ: 穂軸
サイズ (mm): φ230×140
カラー: 3000k / 4000k / 5000k / 6000k/ 赤/緑/青/紫
クリ： >80@3000k / 4000k / 5000k / 6000k/
ルーメン: >120lm/w@3000k / 4000k / 5000k / 6000k/
IPグレード:IP67

無料お見積もり

How to Build an Effective Fishing Light Setup

In the previous sections, we analyzed how light colors behave in different water environments, fish responses to various wavelengths, and practical performance of different colors in saltwater and freshwater. With these principles in mind, the next crucial step is translating them into a real-world fishing light system.

Choosing a fishing light color is only one part of the system. To achieve stable and efficient fish attraction in various water conditions, factors such as water clarity, depth, target species, and fishing method must be considered together. Focusing solely on “which color is best” often leads to inconsistent results.

To make this process easier to follow, we can break it down into a simple decision framework, which guides you step by step from understanding your fishing environment to determining the optimal color, number of lights, and layout.

Fishing Lighting Decision Flow

1. Identify the environment (freshwater / saltwater / turbidity)
2. Define the primary goal (attract baitfish / target predators)
3. Select colors based on depth and penetration needs (green / blue / cyan)
4. Determine the number of lights and layout according to boat size

Recommended Number of Fishing Lights by Boat Type

Optimal Surface-Mounted Fishing Light Setup

1. Enhanced operational safety
   Above-water mounting reduces risk of water ingress, electrical hazards, and damage from currents or debris compared to submerged lighting setups.
2. Wide light coverage
   Properly positioned surface lights reflect and refract into the water, creating broad attraction zones that gather plankton, baitfish, and target predators effectively.
3. Easy maintenance and inspection
   Water-surface mounting allows easy access for cleaning, adjustment, and routine maintenance, without needing to remove lights from the water.
4. Flexible installation options
   Surface lights can be mounted on rails, poles, or brackets around the boat or platform, allowing precise control over beam angles, overlap, and light distribution.

Matching Output and Layout

Experienced operators focus on system synergy rather than just color

1. Match total power and light distribution to scenario:
   Offshore / Large vessels / High current → higher total output + broader coverage Calm freshwater / Nearshore → moderate power + focused illumination
2. Light distribution and overlap are more important than single high-power lights
3. Experienced operators focus on system synergy rather than just color

結論

While fishing light color plays an important role in attracting fish, the real effectiveness of a fishing light system depends on how well color, light output, coverage, and installation work together. Different fishing environments—freshwater, saltwater, nearshore, or offshore—require different lighting strategies rather than a one-size-fits-all solution.

Green fishing lights are widely used because they offer a balanced combination of penetration depth, visibility, and energy efficiency. However, selecting the right number of lights, suitable beam angles, and proper mounting height is often more critical than color alone when aiming for stable and repeatable fishing results.

If you are planning a new fishing light setup or upgrading an existing one, understanding how lighting works in real fishing conditions can help you reduce trial-and-error and improve efficiency from the start. For more detailed guidance on light types, installation methods, and application-specific recommendations, you may explore our related guides on fishing light understanding, boat-mounted lighting solutions, and practical applications across different fishing scenarios.