It's a logo from Game of Thrones of a prominent family in the world. The family is Tully and their logo is a fish which is this logo. The fish has its tail in the lower right then curve around to the left with its fins sticking out then back to the upper right for its face, with its mouth turned down as if it is sad or dead.
This Tully House icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office
, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 16,000 icons, all in the same style and quality.