Barbel

Found in schools, occasionally in lakes, but usually over gravel bottoms, hiding under overhanging trees and bridges during the day, dispersing at night to feed, in lowland reaches of clear, warm, medium sized rivers, with fast currents.
Juveniles found in very shallow bottoms of shorelines.
Widespread Europe

Very common in the aquarium trade.
Cyprinids are stomachless fish with toothless jaws.