Thymalus

Thymalus is a genus of ray-finned fish in the salmon family (Salmonidae). These fish are commonly known as graylings. They are native to cold-water rivers and lakes in northern Eurasia and North America. Graylings are characterized by their large dorsal fins, which are often brightly colored, and their slender, streamlined bodies. They are popular sport fish and are known for their delicate flavor. Key characteristics include:

• Dorsal Fin: The prominent, sail-like dorsal fin is a distinguishing feature. Its size and coloration can vary depending on the species.
• Habitat: Graylings prefer clear, cold, fast-flowing rivers and streams, as well as glacial lakes. They require well-oxygenated water.
• Diet: They are primarily insectivores, feeding on aquatic insects and terrestrial insects that fall into the water. They may also consume small crustaceans and fish eggs.
• Distribution: The distribution of Thymalus species is largely circumpolar, with species found in Europe, Asia, and North America. Specific ranges vary depending on the particular species.
• Conservation Status: The conservation status of various Thymalus species varies. Some species are considered threatened or endangered due to habitat loss, overfishing, and climate change. Conservation efforts are underway in some areas to protect grayling populations.