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Relief map of Austria. The list of fish in Austria consists of indigenous, and also introduced species. In total it consists of 98 species, including 5 which are extinct. [1] The following tags note species in each of those categories: (I) - Introduced (En) - Endemic (Ex) - Extirpated (E) - Extinct
Detailed map of Austria Satellite photo of the Alps. Austria may be divided into three unequal geographical areas. The largest part of Austria (62%) is occupied by the relatively young mountains of the Alps, but in the east, these give way to a part of the Pannonian plain, and north of the river Danube lies the Bohemian Forest, an older, but lower, granite mountain range.
It has been called "the central problem of fish population dynamics" [14] and “the major problem in fisheries science". [15] Fish produce huge volumes of larvae, but the volumes are very variable and mortality is high. This makes good predictions difficult. [16] According to Daniel Pauly, [15] [17] the definitive study was made in 1999 by ...
Epalzeorhynchos is a small ray-finned fish genus of the family Cyprinidae. Its members are – like some other cyprinids – known as "freshwater sharks" or simply "sharks". They are, however, freshwater members of the Osteichthyes lineage which is distinct from the Chondrichthyes lineage of sharks. The description of these animals as "shark ...
The whale shark is the largest species in this order, reaching up to 20 meters long when fully mature. [50] No other species in the order even approaches this size. The next largest species is the nurse shark (Ginglymostoma cirratum), which can grow up to 4.3 m (14 ft) across the disk and weighing more than 350 kg (770 lb). [51] Sawfish ...
The species–area relationship or species–area curve describes the relationship between the area of a habitat, or of part of a habitat, and the number of species found within that area. Larger areas tend to contain larger numbers of species, and empirically, the relative numbers seem to follow systematic mathematical relationships. [1]
Sharks range in size from the small dwarf lanternshark (Etmopterus perryi), a deep sea species that is only 17 centimetres (6.7 in) in length, to the whale shark (Rhincodon typus), the largest fish in the world, which reaches approximately 12 metres (40 ft) in length. [4]
Most oceanic species (78 per cent, or 44 per cent of all fish species), live near the shoreline. These coastal fish live on or above the relatively shallow continental shelf. Only 13 per cent of all fish species live in the open ocean, off the shelf. Of these, 1 per cent are epipelagic, 5 per cent are pelagic, and 7 per cent are deep water. [16]