We may perhaps gather the fact from Berosus' account of the Fish-God as an early object of veneration in that region, as well as from the Hamitic etymology of the name by which he was ordinarily known even in Assyria.

There he was always one of the most important deities.

His temple at Nineveh was very famous, and is noticed by Tacitus in his "Annals;" and he had likewise two temples at Calah (Nimrud), both of them buildings of some pretension.
It has been already mentioned that Nin was the son of Bel-Nimrod, and that Beltis was both his wife and his mother.

These relationships are well established, since they are repeatedly asserted.

One tablet, however, inverts the genealogy, and makes Bel-Nimrod the son of Nin, instead of his father.