Aka : Dagan, Great Fish
Element/sin : god of vegetation, storm god, god of ocean.
Shape : an idol with the head and hands of a man and the tail of a fish, and as half-woman and half-fish.
Origin : Mesopotamia at Ur in 2500 BC. His cult was popular among the Assyrians. He probably began his existence as a Semitic god adopted by the Philistines after their invasion of Canaan.
Myths : When the Philistines placed the captured Ark in a temple of Dagon in Ashdod, before the statue of Dagon. The next morning they found the statue lying on its face on the temple floor. They set it upright again, but the morning after the statue was again lying face down on the floor, this time with its head and hands broken off. The Hebrews regarded this as a sign of the Ark's power (Samuel 5:1-7).
Association : Atargatis
Source: Samuel; Lovecraft's The Shadow Over Innsmouth