When fishing after dark, choosing the best light is about more than simply finding the brightest fixture. Marine LED lights can produce very different results depending on their colour, intensity, water conditions, target species, and how the light is positioned.
Green, blue, and white are among the most commonly discussed colors for fishing lights, but there is no universal rule that one colour will attract every fish in every situation. Research has found meaningful differences in how fish respond to different wavelengths, while field results can vary by species and fishing environment.
That makes colour an important factor when choosing the best marine lights for night fishing.
Water does not treat every wavelength of light in the same way. Some colors travel through water more effectively than others, while suspended particles, depth, clarity, and natural moonlight can change what fish actually see.
Fish also have different visual systems and behaviors. A colour that attracts one species may have a weaker effect on another. For example, a field study of LED light colours found that green light produced the highest fish aggregation and catch weight in the particular lift-net fishery tested.
This is why choosing marine LED lights based only on colour can be misleading. The conditions in which you fish matter just as much.
Green is one of the most widely used colors for fishing lights, and there is research supporting its ability to attract certain fish.
A recent field experiment comparing green, blue, yellow, and white LEDs found that green produced the highest average shoal proportion and the highest average catch in that specific fishing environment. Green LEDs produced a mean shoal proportion of 75.7%, compared with 54.4% for blue and 50.0% for white.
Other research has also found strong responses to green light. In a study of bluefin sea robin caught with illuminated fishing pots, green LED lights produced the highest catch, followed by blue and white.
However, these results should not be treated as proof that green is always the best marine lights colour. Fish behavior changes between species, locations, water conditions, and fishing methods.
Blue is another popular choice, particularly where water clarity and depth are important.
Research into underwater fishing lights has found that shorter wavelengths such as blue can behave differently as light travels through seawater. One study of LED fishing lamps found that blue and cyan wavelengths could perform well in clear seawater, with cyan light showing lower attenuation than white light in the conditions tested.
There are also field observations showing strong attraction to blue light in certain species. One study involving white-edged rockfish recorded substantially more fish attracted to blue light than green or red light during its observation period.
So, while green often performs strongly in fishing experiments, blue should not be dismissed. For some species and environments, it can be highly effective.
White light has an obvious advantage: it provides broad illumination and can make it easier to see the deck, equipment, lines, and surrounding water.