It also has two sets of barbels (whisker-like organs) on the upper and lower jaw, which help the fish hunt its prey in the murky waters of large lakes and slow-flowing rivers across Europe.

• 它们的上下颌上各长着一套触须（象腮须一样的器官），帮助它们在混沌的水域中捕捉猎物，因此它们的身影遍布欧洲的大湖以及水流不急的河流。