👉 Trias is a type of fish that belongs to the family Carangidae, commonly known as the blue tang or yellowtail. They have a relatively small body size (up to about 10 cm in length) and are often found in freshwater habitats such as lakes, rivers, and streams. Trias are known for their unique appearance due to their distinctive striped pattern on their back and sides, which can vary from white to blue or green.