I've been playing EA Atlantis lately, using a cold scale to take advantage of the temperature tolerance of my Deep Ones. My Dagon, however, was feeling rather chilly, so I decided to make the Deep Dagon. I used the sprites for the monster fish and the Dagon as reference, and mostly slapped this together with just GIMP's copy, paste, rotate, and scale functions. Also included is a mod to add the Deep Dagon as a pretender choice for EA Atlantis. Check it out and let me know what you think.
I've done more work on the sprites and refined the stats: