Green lights attract fish in both freshwater and saltwater. The 12-volt fluorescent tube glows green and attracts microorganisms, which in turn attract baitfish. And by adding various size weights, you can float the tube or fully submerge it. The light draws little power so it is easy on your battery. And now, this lineup includes a green Fish-N-Light Spotlight combo. This powerful attractor has an 9" fluorescent green tube, plus a powerful sealed beam spotlight to illuminate a wide bottom area. It comes complete with battery clips and a 20-foot cord. 2,500-hour bulb life.