Localath: rare sights in all of Oki these fishmen inhabit the depths off the coasts. Some though are said to flit about the deep lakes if the Shadow Shogunate. These koifolk are said to be allies with the lake people who share their shores.
The skills employed by mermen in spear-fishing are easily translated into warfare, especially against those who are not at home in the water. In times of need, many mermen of that occupation will volunteer to swell the ranks of their military.