Slark was born in Dark Lagoon that was a part of bigger territory that was called Dark Reef. Dark Lagoon however was the most dangerous and deadly place in whole reef. Environment there was toxic so all creatures living there were bigger, faster and stronger than their kin living outside of Dark Lagoon. Slark would be known as piranha fish elsewhere, however here we was not know at all because he ate all that were unlucky to met him.

Here are wallpapers from loading screen:
16:10 http://i.imgur.com/ffcghCE.jpg
16:9 http://i.imgur.com/jrkNHQm.jpg
4:3 http://i.imgur.com/unfnnEC.jpg

Made for tournament organized by Dota 2 Srbija