Editing Vänern (section)

==Fish==
Vänern has many different fish species. Locals and government officials try to enforce fishing preservation projects, due to threats to the fish habitat. These threats include water cultivation in the tributaries, pollution and the [[M74 syndrome]]. Sport fishing in Vänern is free and unregulated, both from the shore and from boats (with some restrictions, e.g. a maximum of three salmon or trout per person per day). Commercial fishing requires permission.

In the open waters of Vänern, the most common fish is the [[European smelt|smelt]] (''Osmerus eperlanus''), dominating in the eastern Dalbosjön, where the average is 2,600 smelt per hectare. The second most common is the [[Coregonus albula|vendace]] (''Coregonus albula''), also most prominently in Dalbosjön, with 200–300 fish per hectare. The populations may vary greatly between years, depending on temperature, water level and quality.

The most important large fish in the lake are [[brown trout]] (''Salmo trutta'') and [[zander]] (''Sander lucioperca''). The most important small fish is the [[stickleback]].

Vänern has five distinguished species of [[Coregonus|whitefish]]: <!-- The correct scientific names need to be found for these species. -->
* ''[[Coregonus pallasii]]'' (also common in Neva, Gulf of Finland, Baltic Sea)
* Lacustrine fluvial whitefish (''[[Coregonus megalops]]'')
* ''[[Coregonus maxillaris]]'' (population mainly known around Sweden)<ref>[http://www.fishbase.org/Summary/SpeciesSummary.php?id=49240 Fishbase]</ref>
* ''[[Coregonus nilssoni]]''
* Valaam whitefish (''[[Coregonus widegreni]]'')
* ''[[Coregonus maxillaris]]''