Sahuagin

Sahuagin were usually green-skinned; darker on the back and lighter on the belly. Many had dark stripes, bands, or spots, but these tended to fade with age. An adult male sahuagin stood roughly 6 feet (1.8 meters) tall and weighed about 200 pounds (91 kilograms). Sahuagin were highly fish-like, with webbed feet and hands, gills, and a finned tail. There was additional webbing down the back, at the elbows and, notably, also where human ears would be. Some sahuagin developed towering physiques, reaching 9 feet (2.7 meters) tall. The larger beings usually rose to higher positions, as the savage nature of the sahuagin enabled challenges to the death for higher status.
https://forgottenrealms.fandom.com/wiki/Sahuagin

Related Historical Events

• 1494
  Sahuagin Ambush