Fishing Lights

What Are Fishing Lights and How Do They Work?

Fishing lights are submersible or surface-mounted lighting systems designed to attract fish to a specific area — whether that's beneath your boat, off your dock, or along a pier. The science behind them is elegantly simple: light triggers a natural food chain reaction. Fishing lights draw plankton to the illuminated water, and baitfish follow to feed on the plankton. Larger predatory gamefish then move in to feed on the baitfish, creating a concentrated feeding zone right where you want it.

This chain reaction — plankton, then baitfish, then gamefish — can begin within minutes of deploying a light. Over time, fish develop a feeding cycle around a consistently placed light, returning night after night to the same productive spot. The result is a reliable, self-replenishing hotspot that anglers can count on.

Submersible vs. Above-Water Fishing Lights

Fishing lights come in two main configurations. Submersible underwater lights sink to your chosen depth, putting virtually all of their output directly into the water column for maximum penetration and a full 360-degree spread. Above-water flood lights shine down onto the surface and are easier to install and maintain, though some light is lost to surface reflection. Each approach has its merits depending on your setup, target species, and whether you're fishing from a boat or a fixed dock.

Choosing the Right Color

Light color plays a meaningful role in fish attraction. Green is the most popular choice for underwater fishing lights because it penetrates water effectively across a wide range of conditions and reliably stimulates plankton response. White light is excellent for visibility and certain activities like shrimping and flounder gigging, while blue can be highly effective in crystal-clear saltwater. For most freshwater and saltwater night fishing scenarios, green is considered the best all-around option.

Key Considerations When Shopping for Fishing Lights

• Power source: Most portable underwater fishing lights run on 12V DC power, making them easy to connect directly to your boat's battery with alligator clips.
• Brightness and coverage: Higher lumen output and a 360-degree spread attract bait from a wider area — a critical advantage in open water.
• Durability: Marine environments are harsh. Look for lights built with corrosion-resistant housings, sealed electronics, and rugged frames that can withstand saltwater, impacts, and changing tides.
• Size and depth range: Smaller lights are ideal for shallow water and kayaks, while longer, higher-wattage models excel in deep-water offshore and freshwater lake fishing.
• Freshwater vs. saltwater: Many quality fishing lights are engineered to perform in both environments — confirming this compatibility before purchasing is essential.

Top Brands in Fishing Lights

Hydro Glow is widely recognized as a pioneer in the underwater fishing light category. Founded in 1999, Hydro Glow is a second-generation, family-run, American-made manufacturer that offers a full lineup of submersible LED fishing lights in multiple sizes — from compact 12-inch models for small boats and kayaks to large 40-inch deep-water units — alongside dock lights, floating lights, and even solar-powered options. Their lights feature extruded aluminum frames, marine-grade sealed construction, and energy-efficient 12V LED technology that delivers impressive lumen output with a low amp draw.