It's easy to remember, thanks to this little mnemonic trick:
- The Common Umbe lives mainly in rivers. (It can also be found at river mouths).
- The OmbLe chevalier lives in the Lakes.
Both belong to the family of salmonids with adipose fins.
The Grayling likes well-oxygenated water and lives on gravel or sandy bottoms. Its mimicry allows it to hide by remaining on the bottom, and only its shadow can betray it, hence its name. The grayling is a little-known and endangered fish, as it is very sensitive to water pollution in rivers. It is therefore an excellent indicator of water quality. It is rarely eaten, as its flesh spoils quickly after death. However, its flesh is delicious and has a scent of thyme, giving it its Latin name: Thymallus thymallus. However, its fishing is regulated. It can be recognised by its tall, brightly-coloured fin with 20 to 24 rays. Its elongated body is covered in large scales, giving it a shiny appearance.
The Char likes cold, deep water and lays its eggs on rocky bottoms, between 60 and 80 metres deep, called omblières. Like the grayling, the char is very sensitive to pollution. Its flesh is sought after by amateur and professional fishermen, and above all by certain top chefs. They are similar to trout, but with brighter hues, particularly during the breeding season, when their bellies turn red.
