The common bream can easily be confused with the silver or white bream Blicca bjoerkna, in particular at the younger stages see picture. The most reliable method of distinguishing these species is by counting the scales in a straight line downwards from the first ray of the dorsal fin to the lateral line. Silver bream have fewer than 10 rows of scales, while common bream have 11 or more. At the adult stage the reddish tint of the pectoral fin of the silver bream is diagnostic. Like other Cyprinidae, common bream can easily hybridise with other species, and hybrids with roach Rutilus rutilus can be very difficult to distinguish from pure-bred bream

圖片編號： 212567551
拍攝者： Mikih5