Tiamat... Dagon? Options Rating

I know this question may be some off, but is the Mesopatamian Goddess "Tiamat" the same as "Dagon" from the Necronomicon?

It is said that Tiamat was slain by Marduk, as I was doing research on Mesopatamian Mythology. From my understanding, Dagon was known as a female as well, if not, androgynous, but not fully a male Old one.

Is Tiamat really the same as Dagon?

Tiamat is described as a monster, and is considered the embodiment of chaos. Marduk, on the other hand, is destined to become the creator of the world, of order, and is charged with the task of vanquishing Tiamat. After driving the Evil Wind” into her body, he released the arrow, it tore her belly, cut through her insides, splitting the heart. Having thus subdued her, he extinguished her life /and/ cast down her carcass to stand upon it. Then the lord paused to view her dead body, that he might divide the monster and do artful works. He split her like a shellfish into two parts.Marduk then proceeded to create the world from pieces of her body.

I always seen marduk as the archetype in our collective unconsious that creates order from chaos.