Equine watercreature with a canine mouth

Hyperrealistic style, it is like a horror story, decaying equine watercreature with a canine mouth with big blue eyes that looks extreme innocent, it is a brookhorse a kelpie, it is rabid, it has a very ugly fishtail, there is a full moon, full body image, high quality, hyperrealistic, intricate details, ultra detailed, cinematic --q 2 --v 5.1