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 is a Tully House icon. It is available in PNG and vector. Downloading is free for PNGs up to 100x100px.