Vänern is the largest lake in Sweden, the largest lake in the European Union and the third-largest lake of all Europe after Ladoga and Onega in Russia. It is located in the provinces of Västergötland, Dalsland, and Värmland in the southwest of the country. With its surface located at 44 metres (144 ft) with a maximum depth of 106 metres (348 ft), the lowest point of the Vänern basin is at 62 metres (203 ft) below sea level. The average depth is at a more modest 28 metres (92 ft), which means that the average point of the lake floor remains above sea level.
Trout are species of freshwater fish belonging to the genera Oncorhynchus, Salmo and Salvelinus, all of which are of the subfamily Salmoninae of the family Salmonidae. The word trout is also used as part of the name of some non-salmonid fish such as Cynoscion nebulosus, the spotted seatrout or speckled trout.
Salmonidae is a family of ray-finned fish that constitutes the only currently extant family in the order Salmoniformes. It includes salmon, trout, chars, freshwater whitefishes, graylings, taimens and lenoks, which are collectively known as the salmonids. The Atlantic salmon, whose Latin name became that of its genus Salmo, is also the source of the family and order names.
Lake Garda is the largest lake in Italy. It is a popular holiday location in northern Italy, about halfway between Brescia and Verona, and between Venice and Milan on the edge of the Dolomites. Glaciers formed this alpine region at the end of the last ice age. The lake and its shoreline are divided between the provinces of Brescia, Verona (south-east) and Trentino (north).
Salmo is a genus of ray-finned fish from the family Salmonidae. The single Salmo species naturally found in the Atlantic North America is the Atlantic salmon, whereas the salmon and trout of the Pacific basin belong to another genus, Oncorhynchus. The natural distribution of Salmo also extends to North Africa and to West Asia around the Black Sea basin.
The Apache trout, Oncorhynchus apache, is a species of freshwater fish in the salmon family of order Salmoniformes. It is one of the Pacific trouts.
The Sevan trout is an endemic fish species of Lake Sevan in Armenia, known as ishkhan in Armenian. It is a salmonid fish related to the brown trout.
The Atlantic whitefish is a coregonine fish inhabiting some freshwater lakes within Nova Scotia, Canada. It is known to survive only in the Petite Rivière watershed as landlocked populations. Earlier it was also found in the Tusket and Annis rivers of Nova Scotia. Those populations were anadromous, migrating to the estuary to feed while breeding in freshwater.
Ohrid trout or the Lake Ohrid brown trout is an endemic species of trout in Lake Ohrid and in its tributaries and outlet, the Black Drin river, in North Macedonia and Albania. Locally, the fish is known as охридска пастрмка in Macedonian and koran in Albanian.
Salmo ohridanus, also known by the local name as the belvica in North Macedonia or belushka in Albania, is a species of freshwater salmonid fish, endemic to Lake Ohrid in Albania and North Macedonia.
Salmo aphelios is a species of trout, a salmonid fish endemic to Lake Ohrid in North Macedonia and Albania in the Balkans.
Salmo dentex is a variety of trout, a freshwater fish in the family Salmonidae, found in the western Balkans. Until recently the identity, biological distinctness and species status of the dentex trout were not properly clarified, but genetic data now suggest it is not a monophyletic unit that could be distinguished from other salmonids as a separate species.
Salmo marmoratus, the marble trout, is a species of freshwater fish in the family Salmonidae. It is characterized by a distinctive marbled color pattern and high growth capacity. The marble trout is found in only a handful of drainages and rivers of the Adriatic basin in Italy, Slovenia, Croatia, Bosnia and Herzegovina, and Montenegro, while in Albania, the species is considered most likely extirpated.
The Lake Sidi Ali trout is an extinct species of salmonid fish that inhabited a single lake in the Atlas mountains of northern Morocco, at higher than 2000 metres elevation. It went extinct in the 1930s, probably because of introduction of common carp in the lake. Only two individuals remain in museum collections.
Salmo fibreni, or the Fibreno trout, is a freshwater salmonid fish, endemic to Lago di Posta Fibreno in central Italy.
The fish fauna of the Neretva river basin in the western Balkans is representative of the Dinaric karst region and characterized by several endemic and endangered species.
