Thymallus

Thymallus, commonly known as graylings, is a genus of freshwaterray-finned fish and the only genus within the subfamilyThymallinae of the familySalmonidae. Although all Thymallus species can be generically called graylings, without specific qualification the term "grayling" typically refers to the type speciesThymallus thymallus, the European grayling.