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
Crab-eating mongoose Crab-eating mongoose The crab-eating mongoose ("Herpestes urva") is a mongoose species ranging from the northeastern Indian subcontinent and Southeast Asia to southern China and Taiwan. It is listed as Least Concern on the IUCN Red List. Throughout its wide range there are many languages and therefore various common names for the species. In particular, according to at least some major dictionaries, the source of the species name "urva" (which at one time was also the name of the genus, as in: "Urva urva") was the Nepali language "urvá" or "arvá". The crab-eating mongoose is grey, with a broad white stripe