What Divers Should Know About Mangrove Snapper

Native to the western Atlantic Ocean, the Mangrove snapper (Lutjanus griseus) ranges from Massachusetts south to Brazil, encompassing the Gulf of Mexico, Bermuda, and the Caribbean Sea. This highly adaptable species is a common sight in warmer regions, thriving across a wide array of habitats, including brackish and even fresh waters. Typically grayish red, its coloration can shift dramatically from bright red to copper red. When observed from above underwater, a dark stripe often runs across its eye, serving as a key distinguishing feature.

This adaptable snapper prefers structure, making it a common sight around docks, mangroves, shipwrecks, and debris. They are also found near bottom structure or reefs in open water, inhabiting depths from 5 to 180 meters; however, most sightings occur at less than 50 meters. While capable of reaching lengths up to 89 cm (35 in), most individuals encountered will not exceed 40 cm (16 in). Distinguishing them from other species is key; for example, the similar Dog snapper has a lighter triangle of color with a blue band under the eye and prominent fangs.