👉 Bhutanotrechus is a genus of freshwater fish in the family Tetrachordidae. These small, flat-bodied fish are found primarily in the Indo-Australian region and can be found in rivers, lakes, and streams. They have a distinctive white and black body with large, round eyes and a long, slender tail. Some species are known to swim upstream on shoals of fish, displaying a unique behavior characterized by their tail movements being directed at their prey.