Danube bleak gravel bottoms. The females arrive later and deposit about twenty thousand eggs which stick to stones and gravel. These hatch after two or three days and the larvae stay among the gravel for another ten days before moving to backwaters and shallows where they feed on zooplankton, insect larvae and algae. The juvenile fish migrate down stream in the autumn or the spring of the following year. They may become mature in four to five years. Danube bleak The Danube bleak or Caspian shemaya ("Alburnus chalcoides") is a species of freshwater fish in the family Cyprinidae. It is found in
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