An upgrade from Swole, to become Chadfins, I have done some basic editing work a while back to add pecs and abs to the shirtless portrait - giving it a closer appearance to the original artwork of Aquatics.

https://imgur.com/9CVEd0T image of the full change, close up

https://imgur.com/6TpNxaU image from in game

and here's the files, Author, please feel free to just add this if you like! add these to the following path in the steam folder: steamapps\common\Stellaris\gfx\models\portraits\aquatic

https://mega.nz/file/m3RWja5S#-kbrjSPaGNn2f-wb8QpkVR1KIhAHZWeN3Y1epSCaHnE