Danube bleak branched rays while the anal fin has fifteen to nineteen. This fish is morphologically quite variable which may be due to local adaptations to various habitats but is more likely to be due to several species being involved. The Danube bleak occurs in slow flowing stretches of rivers flowing into the Black Sea and the Caspian Sea and in the Aral Sea basin, in Alpine rivers among others. It is a migratory fish, spawning in the headwaters of the rivers and then moving down to the lower parts, estuaries and brackish areas of sea. These migratory patterns have been disrupted
The Crab and the Fox their familiar pursuits and take up a business they know nothing about”. The fable appeared in the Medici manuscript in the 15th century and later among those recorded by Roger L'Estrange (1692). In Victorian times the story appeared in George Fyler Townsend’s new translation with the moral “Contentment with our lot is an element of happiness”. Crabs are not a natural food for foxes but anciently they were confused with crayfish and there is a freshwater species of crayfish that is eaten by foxes in the Balkan Danube region. There is in addition a South American Crab-eating Fox about which